doc: show modules without img in graphical index (https://trac.osgeo.org/grass/changeset/70471 in 72)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72303 15284696-431f-4ddb-bdfa-cd5b030d7da7

man/build_class_graphical.py

@@ -230,7 +230,7 @@ def main():
 
     for short_family, module_family in families:
         generate_page_for_category(short_family, module_family, imgs,
-                                   year=year, skip_no_image=True)
+                                   year=year, skip_no_image=False)
 
 
 if __name__ == '__main__':