dox: only one mainpage is alowed for doxygen

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@53082 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/temporal/spatial_extent.py

@@ -1330,7 +1330,7 @@ class SpatialExtent(SQLDatabaseInterface):
         >>> A.spatial_relation(B)
         'meet'
         
-        @endverbatim
+        @endcode
         """
 
         if self.equivalent(extent):

lib/vector/vectorlib.dox

@@ -1,4 +1,4 @@
-/*! \mainpage vectorlib GRASS Vector Library
+/*! \page vectorlib GRASS Vector Library
 
 by GRASS Development Team (http://grass.osgeo.org)