v.build manual: point to progman for topology dump

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@64445 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.build/v.build.html

@@ -58,11 +58,13 @@ v.build map=urbanarea option=build
 Note that the vector map <i>urbanarea</i> must be located in the
 current mapset.
 
-<h3>Dump topology or indeces</h3>
+<h3>Dump topology or indices</h3>
 
 Dump options print topology, spatial, category or feature index to
 standard output. Such information can be printed also for vector maps
-from other mapsets.
+from other mapsets. A description of the vector topology is available in
+the <a href="http://grass.osgeo.org/programming7/vlibTopology.html">GRASS GIS 7 Programmer's Manual</a>,
+section "Vector library topology management".
 
 <div class="code"><pre>
 v.build map=urbanarea option=dump