fix images path in doxygen

.extra/doxygen/doxyfile

@@ -62,13 +62,13 @@ PROJECT_BRIEF          = "Project of four first grade MIPT DAFE/RSE students (fo
 # pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
 # the logo to the output directory.
 
-PROJECT_LOGO           = images/icon.png
+PROJECT_LOGO           = .extra/images/icon.png
 
 # With the PROJECT_ICON tag one can specify an icon that is included in the tabs
 # when the HTML document is shown. Doxygen will copy the logo to the output
 # directory.
 
-PROJECT_ICON           = images/icon.png
+PROJECT_ICON           = .extra/images/icon.png
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
 # into which the generated documentation will be written. If a relative path is
@@ -1110,7 +1110,7 @@ EXAMPLE_RECURSIVE      = NO
 # that contain images that are to be included in the documentation (see the
 # \image command).
 
-IMAGE_PATH             = images
+IMAGE_PATH             = .extra/images
 
 # The INPUT_FILTER tag can be used to specify a program that doxygen should
 # invoke to filter for each input file. Doxygen will invoke the filter program