+example, even if simple

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@55010 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/v.build.all/v.build.all.html

@@ -3,6 +3,13 @@
 <em>v.build.all</em> runs <em><a href="v.build.html">v.build</a></em>
 for all vectors in the current mapset.
 
+<h3>Example</h3>
+
+<div class="code"><pre>
+# rebuild topology for all vector maps in the current mapset
+v.build.all
+</pre></div>
+
 <h2>AUTHOR</h2>
 Radim Blazek