docs: v.surf.bspline.html fix typo and minor touches

[dhdeangelis]

No description provided.

[neteler]

For more historical context:

"Sites" have been deprecated when releasing GRASS GIS 6, see also

https://grasswiki.osgeo.org/wiki/Upgrading_GRASS_database#Migrating_from_GRASS_5_to_GRASS_6

[echoix]

For more historical context:

"Sites" have been deprecated when releasing GRASS GIS 6, see also

https://grasswiki.osgeo.org/wiki/Upgrading_GRASS_database#Migrating_from_GRASS_5_to_GRASS_6

Thanks!

Oh, I see in https://grasswiki.osgeo.org/wiki/Upgrading_GRASS_database#Migrating_from_GRASS_6_to_GRASS_7 that it mentions "Raster: No changes. However, it is recommended", without the recommendation.

[neteler]

Oh, I see in https://grasswiki.osgeo.org/wiki/Upgrading_GRASS_database#Migrating_from_GRASS_6_to_GRASS_7 that it mentions "Raster: No changes. However, it is recommended", without the recommendation.

(Wiki page fixed)

[echoix]

If the conversation is resolved, the PR will merge