Vlib documentation: points do not have nodes

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@56251 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/vector/vectorlib_topology.dox

@@ -169,7 +169,7 @@ areas. The geometry type GV_LINE cannot form an area.
 \verbatim
 One point (nodes: 0, lines: 1, areas: 0, isles: 0)
 
-    + N1/L1
+    + L1
 \endverbatim
 
 Line L1 (see \ref P_line)