manual: fix more broken HTML tags (#4765)

In order to obtain a good result when converting the HTML manual pages files to markdown, ideally clean HTML code is used.

This PR fixes numerous broken HTML tags identified during a test run of [adding HTML validation with super-linter](echoix#303).

For reference, see logs showing the errors at
https://github.com/echoix/grass/actions/runs/12001379426/job/33451802353?pr=303#step:4:8310

Fixes:
- incomplete tag pairs
- tabs replaced with white space
- fix missing .html extension in URLs

db/databaseintro.html

@@ -36,7 +36,7 @@ <h3>Attribute data import and export</h3>
 Further conversion tools:
 <ul>
 <li><a href="http://sourceforge.net/projects/mdbtools">MDB Tools</a>: Convert MS-Access data to SQL, DBF, etc.</li>
-<li><a href="https://grasswiki.osgeo.org/wiki/Openoffice.org_with_SQL_Databases">Using OpenOffice.org with SQL Databases</a>
+<li><a href="https://grasswiki.osgeo.org/wiki/Openoffice.org_with_SQL_Databases">Using OpenOffice.org with SQL Databases</a></li>
 </ul>
 
 

db/db.select/db.select.html

@@ -62,7 +62,7 @@ <h3>Execute multiple SQL statements</h3>
 <div class="code"><pre>
 cat file.sql
 SELECT * FROM busstopsall WHERE cat = 1
-SELECT cat FROM busstopsall WHERE cat > 4 AND cat &lt; 8
+SELECT cat FROM busstopsall WHERE cat &gt; 4 AND cat &lt; 8
 
 db.select input=file.sql
 </pre></div>

db/drivers/mysql/grass-mesql.html

@@ -14,9 +14,9 @@ <h2>Driver and database name</h2>
 before use of the driver. In the name of database
 it is possible to use 3 variables:
 <ul>
-  <li> $GISDBASE - path to current GISBASE
-  <li> $LOCATION_NAME - name of current location
-  <li> $MAPSET - name of current mapset
+  <li> $GISDBASE - path to current GISBASE</li>
+  <li> $LOCATION_NAME - name of current location</li>
+  <li> $MAPSET - name of current mapset</li>
 </ul>
 
 <p>

db/drivers/mysql/grass-mysql.html

@@ -14,7 +14,7 @@ <h2>Creating a MySQL database</h2>
 A new database is created within MySQL:
 
 <div class="code"><pre>
-mysql> CREATE DATABASE mydb;
+mysql&gt; CREATE DATABASE mydb;
 </pre></div>
 
 See the MySQL manual for details.
@@ -27,21 +27,21 @@ <h2>Driver and database name</h2>
 The parameter 'database' can be given in two formats:
 
 <ul>
-    <li> Database name - in case of connection from localhost
+    <li> Database name - in case of connection from localhost</li>
     <li> String of comma separated list of kye=value options.
-         Supported options are:
-	 <ul>
-	     <li> dbname - database name
-	     <li> host - host name or IP address
-	     <li> port - server port number
-	 </ul>
+         Supported options are:</li>
+     <ul>
+         <li> dbname - database name</li>
+         <li> host - host name or IP address</li>
+         <li> port - server port number</li>
+     </ul>
 </ul>
 <p>
 Examples of connection parameters:
-<pre>
+<div class="code"><pre>
 db.connect driver=mysql database=mytest
 db.connect driver=mysql database='dbname=mytest,host=test.grass.org'
-</pre>
+</pre></div>
 
 <h2>Data types</h2>
 
@@ -51,16 +51,16 @@ <h2>Data types</h2>
 BLOB, LONGBLOB) are not not supported.
 If a table with binary column(s) is used in GRASS
 a warning is printed and only the supported columns are
-returned in query results.
+returned in query results.</li>
 
-<li> Columns of type SET and ENUM are represented as string (VARCHAR).
+<li> Columns of type SET and ENUM are represented as string (VARCHAR).</li>
 
 <li> Very large integers in columns of type BIGINT can be lost
 or corrupted because GRASS does not support 64 bin integeres
-on most platforms.
+on most platforms.</li>
 
 <li> GRASS does not currently distinguish types TIMESTAMP and
-DATETIME. Both types are in GRASS interpreted as TIMESTAMP.
+DATETIME. Both types are in GRASS interpreted as TIMESTAMP.</li>
 </ul>
 
 <h2>Indexes</h2>
@@ -81,11 +81,12 @@ <h2>Privileges</h2>
 to other users you have to ask your MySQL server administrator
 to grant select privilege to them on the MySQL database used
 for that mapset. For example, to allow  everybody to read data
-in from your database 'mydb':<br>
-<pre>
+in from your database 'mydb':
+<br>
+<div class="code"><pre>
 shell&gt; mysql --user=root mysql
 mysql&gt; GRANT SELECT ON mydb.* TO ''@'%';
-</pre>
+</pre></div>
 
 <h2>Schemas</h2>
 

db/drivers/postgres/grass-pg.html

@@ -115,7 +115,7 @@ <h3>Example: Import from PostGIS</h3>
 <h4>Geometry Converters</h4>
 <ul>
 <li><a href="http://postgis.refractions.net/download/">PostGIS with shp2pgsql</a>:<br>
- <tt>shp2pgsql -D lakespy2 lakespy2 test > lakespy2.sql</tt>
+ <tt>shp2pgsql -D lakespy2 lakespy2 test &gt; lakespy2.sql</tt>
 </li>
 <li><a href="http://e00pg.sourceforge.net/">e00pg</a>: E00 to PostGIS filter,
 see also <em><a href="v.in.e00.html">v.in.e00</a></em>.

display/d.geodesic/d.geodesic.html

@@ -33,7 +33,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <p><center>
-<img src="d_geodesic.png" border=1><br>
+<img src="d_geodesic.png" border="1" alt="Geodesic line (great circle line)"><br>
 <i>Geodesic line (great circle line)</i>
 </center>
 

display/d.graph/d.graph.html

@@ -207,7 +207,7 @@ <h2>LIMITATIONS</h2>
 There are no automated ways of generating graphic images. It is anticipated
 that GRASS user sites will write programs to convert output from a resident
 graphics editor into GRASS <em>d.graph</em> format.
-(e.g. EPS -> <em>d.graph</em>, perhaps with the help of a
+(e.g. EPS -&gt; <em>d.graph</em>, perhaps with the help of a
 <a href="http://www.pstoedit.net/">pstoedit</a> plugin)
 
 <h2>SEE ALSO</h2>

display/d.legend/d.legend.html

@@ -104,7 +104,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <center>
-<img src="d_legend.png" alt="Elevation map with legend" border=1>
+<img src="d_legend.png" alt="Elevation map with legend" border="1">
 </center>
 
 Displaying the legend with custom labels and background:
@@ -116,7 +116,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <center>
-<img src="d_legend_custom_labels_and_background.png" alt="Elevation map with custom legend" border=1>
+<img src="d_legend_custom_labels_and_background.png" alt="Elevation map with custom legend" border="1">
 </center>
 
 Displaying the legend with logarithmic scale:
@@ -129,7 +129,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <center>
-<img src="d_legend_logarithmic.png" alt="Flow accumulation map with logarithmic legend" border=1>
+<img src="d_legend_logarithmic.png" alt="Flow accumulation map with logarithmic legend" border="1">
 </center>
 
 

display/d.rast.num/d.rast.num.html

@@ -32,7 +32,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <div align="center" style="margin: 10px">
-<img src="d_rast_num_zoom.png" border=0><br>
+<img src="d_rast_num_zoom.png" border="0" alt="Euclidean distance from the streams network in meters"><br>
 <i>Euclidean distance from the streams network in meters (detail, numbers shown
    with d.rast.num)</i>
 </div>

display/d.rhumbline/d.rhumbline.html

@@ -34,7 +34,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <p><center>
-<img src="d_rhumbline.png" border=1><br>
+<img src="d_rhumbline.png" border="1"><br>
 <i>Rhumbline (loxodrome)</i>
 </center>
 

display/d.text/d.text.html

@@ -89,7 +89,7 @@ <h2>EXAMPLE</h2>
 </pre></div>
 
 <div align="center" style="margin: 10px">
-<img src='d_text.png' width="600" border="1">
+<img src="d_text.png" width="600" border="1">
 <br>
 <i>Displayed Text</i>
 </div>

display/d.vect.chart/d.vect.chart.html

@@ -7,9 +7,9 @@ <h2>NOTES</h2>
 
 The charts are positioned as follows:
 <ul>
-<li> vector points: on point position,
-<li> vector lines: on line centers,
-<li> vector areas: on area centroids.
+<li> vector points: on point position,</li>
+<li> vector lines: on line centers,</li>
+<li> vector areas: on area centroids.</li>
 </ul>
 
 Bar charts are placed with their lower edge starting from the y-coordinate

display/displaydrivers.html

@@ -9,10 +9,10 @@
 <p>
 <b>List of available display drivers:</b>
 <ul>
-  <li><a href="cairodriver.html">Cairo driver</a>
-  <li><a href="pngdriver.html">PNG driver</a>
-  <li><a href="psdriver.html">PS driver (Postscript)</a>
-  <li><a href="htmldriver.html">HTMLMAP driver</a>
+  <li><a href="cairodriver.html">Cairo driver</a></li>
+  <li><a href="pngdriver.html">PNG driver</a></li>
+  <li><a href="psdriver.html">PS driver (Postscript)</a></li>
+  <li><a href="htmldriver.html">HTMLMAP driver</a></li>
 </ul>
 
 <h2>NOTES</h2>

doc/gui/wxpython/example/g.gui.example.html

@@ -48,7 +48,7 @@ <h3>EXAMPLE TOOL TOOLBAR</h3>
 <h2>SEE ALSO</h2>
 
 <em>
-  <a href="wxGUI.html">wxGUI</a><br>
+  <a href="wxGUI.html">wxGUI</a>,
   <a href="wxGUI.components.html">wxGUI components</a>
 </em>
 

doc/projectionintro.html

@@ -12,7 +12,7 @@ <h3>Projection management in general</h3>
 <h3>Reprojecting raster maps</h3>
 
 Rasters are reprojected using the raster projection tool
-<em><a href=r.proj.html>r.proj</a></em>.
+<em><a href="r.proj.html">r.proj</a></em>.
 The tool is used in the target project to "pull" a map from its source project.
 Both projects need to have a projection defined,
 i.e., they cannot be XY (unprojected).
@@ -37,7 +37,7 @@ <h3>Raster map transformation</h3>
 <h3>Vector map projections</h3>
 
 Vectors are reprojected using the vector projection tool
-<em><a href=v.proj.html>v.proj</a></em>.
+<em><a href="v.proj.html">v.proj</a></em>.
 The tool is used in the target project to "pull" a map from its source project.
 Both projects need to have a projection defined,
 i.e., they cannot be XY (unprojected).
@@ -60,11 +60,11 @@ <h3>Vector map transformation</h3>
 <h3>References</h3>
 
 <ul>
-<li> <a href="https://www.asprs.org/asprs-publications/grids-and-datums">ASPRS Grids and Datum</a>
-<li> <a href="http://geotiff.maptools.org/proj_list/">Projections Transform List</a> (PROJ)
-<li> <a href="https://proj.org/operations/index.html">Coordinate operations</a> by PROJ (projections, conversions, transformations, pipeline operator)
-<li> <a href="http://www.mapref.org">MapRef - The Collection of Map Projections and Reference Systems for Europe</a>
-<li> <a href="http://crs.bkg.bund.de/crs-eu/">Information and Service System for European Coordinate Reference Systems - CRS</a>
+<li> <a href="https://www.asprs.org/asprs-publications/grids-and-datums">ASPRS Grids and Datum</a></li>
+<li> <a href="http://geotiff.maptools.org/proj_list/">Projections Transform List</a> (PROJ)</li>
+<li> <a href="https://proj.org/operations/index.html">Coordinate operations</a> by PROJ (projections, conversions, transformations, pipeline operator)</li>
+<li> <a href="http://www.mapref.org">MapRef - The Collection of Map Projections and Reference Systems for Europe</a></li>
+<li> <a href="http://crs.bkg.bund.de/crs-eu/">Information and Service System for European Coordinate Reference Systems - CRS</a></li>
 </ul>
 
 <h3>See also</h3>

general/g.findfile/g.findfile.html

@@ -68,7 +68,7 @@ <h3>SHELL</h3>
 <div class="code"><pre>
 eval `g.findfile element=vector file="$G_OPT_V_INPUT"`
 if [ ! "$file" ] ; then
-   g.message -e "Vector map <$G_OPT_V_INPUT> not found"
+   g.message -e "Vector map &lt;$G_OPT_V_INPUT&gt; not found"
    exit 1
 fi
 </pre></div>

general/g.gisenv/g.gisenv.html

@@ -186,10 +186,10 @@ <h3>GRASS Debugging</h3>
 
 Levels: (recommended levels)
 <ul>
-  <li> 0 - silence
-  <li> 1 - message is printed once or few times per module
-  <li> 3 - each row (raster) or line (vector)
-  <li> 5 - each cell (raster) or point (vector)
+  <li> 0 - silence</li>
+  <li> 1 - message is printed once or few times per module</li>
+  <li> 3 - each row (raster) or line (vector)</li>
+  <li> 5 - each cell (raster) or point (vector)</li>
 </ul>
 
 To disable debugging messages:

general/g.message/g.message.html

@@ -51,13 +51,13 @@ <h3>Usage in Python scripts</h3>
 for <em>g.message</em>.
 
 <ul>
-  <li><tt>debug()</tt> for <tt>g.message -d</tt>
-  <li><tt>error()</tt> for <tt>g.message -e</tt>
-  <li><tt>fatal()</tt> for <tt>g.message -e</tt> + <tt>exit()</tt>
-  <li><tt>info()</tt> for <tt>g.message -i</tt>
-  <li><tt>message()</tt> for <tt>g.message</tt>
-  <li><tt>verbose()</tt> for <tt>g.message -v</tt>
-  <li><tt>warning()</tt> for <tt>g.message -w</tt>
+  <li><tt>debug()</tt> for <tt>g.message -d</tt></li>
+  <li><tt>error()</tt> for <tt>g.message -e</tt></li>
+  <li><tt>fatal()</tt> for <tt>g.message -e</tt> + <tt>exit()</tt></li>
+  <li><tt>info()</tt> for <tt>g.message -i</tt></li>
+  <li><tt>message()</tt> for <tt>g.message</tt></li>
+  <li><tt>verbose()</tt> for <tt>g.message -v</tt></li>
+  <li><tt>warning()</tt> for <tt>g.message -w</tt></li>
 </ul>
 
 <p>
@@ -81,10 +81,10 @@ <h3>VERBOSITY LEVELS</h3>
 Controlled by the "<tt>GRASS_VERBOSE</tt>" environment variable. Typically this
 is set using the <b>--quiet</b> or <b>--verbose</b> command line options.
 <ul>
-<li>0 - only errors and warnings are printed
-<li>1 - progress messages are printed
-<li>2 - all module messages are printed
-<li>3 - additional verbose messages are printed
+<li>0 - only errors and warnings are printed</li>
+<li>1 - progress messages are printed</li>
+<li>2 - all module messages are printed</li>
+<li>3 - additional verbose messages are printed</li>
 </ul>
 
 <h3>DEBUG LEVELS</h3>
@@ -93,9 +93,9 @@ <h3>DEBUG LEVELS</h3>
 <br>
 Recommended levels:
 <ul>
-<li>1 - message is printed once or few times per module
-<li>3 - each row (raster) or line (vector)
-<li>5 - each cell (raster) or point (vector)
+<li>1 - message is printed once or few times per module</li>
+<li>3 - each row (raster) or line (vector)</li>
+<li>5 - each cell (raster) or point (vector)</li>
 </ul>
 
 <h2>EXAMPLES</h2>
@@ -138,7 +138,10 @@ <h2>EXAMPLES</h2>
 <h2>SEE ALSO</h2>
 
 <em>
-<a href="variables.html">GRASS variables and environment variables</a><br>
+<a href="variables.html">GRASS variables and environment variables</a>
+</em>
+<br>
+<em>
 <a href="g.gisenv.html">g.gisenv</a>,
 <a href="g.parser.html">g.parser</a>
 </em>

general/g.parser/g.parser.html

@@ -645,7 +645,7 @@ <h3>Easy creation of a script</h3>
 # % multiple: no
 # % key_desc: sql_query
 # % label: WHERE conditions of SQL statement without 'where' keyword
-# % description: Example: income < 1000 and population >= 10000
+# % description: Example: income &lt; 1000 and population &gt;= 10000
 # %end
 
 import sys

general/g.proj/g.proj.html

@@ -228,14 +228,13 @@ <h2>REFERENCES</h2>
 
 <p><b>Further reading</b>
 <ul>
-<li> <a href="https://www.asprs.org/asprs-publications/grids-and-datums">ASPRS Grids and Datum</a>
-<li> <a href="http://www.mapref.org">MapRef - The Collection of Map Projections and Reference Systems for Europe</a>
-<li> <a href="http://geotiff.maptools.org/proj_list/">Projections Transform List</a> (PROJ)
+<li> <a href="https://www.asprs.org/asprs-publications/grids-and-datums">ASPRS Grids and Datum</a></li>
+<li> <a href="http://www.mapref.org">MapRef - The Collection of Map Projections and Reference Systems for Europe</a></li>
+<li> <a href="http://geotiff.maptools.org/proj_list/">Projections Transform List</a> (PROJ)</li>
 </ul>
 
 <h2>SEE ALSO</h2>
 
-
 <em>
 <a href="m.proj.html">m.proj</a>,
 <a href="r.proj.html">r.proj</a>,