Fix broken tag

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@34283 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.patch/v.patch.html

@@ -14,7 +14,13 @@ edited or removed after <em>v.patch</em> is run.  Such
 editing can be done automatically using
 <em><a HREF="v.clean.html">v.clean</a></em> (tool=snap,break,rmdupl).
 
-When using the <em>-a</em< flag, the user has to make sure that the features in the different maps added to the output map do not have overlapping category numbers, unless identical category numbers reflect identical attributes, otherwise the attributes of the added maps are lost. To avoid this, the user can use <em>v.category option=sum</em> to change category values of some of the maps before patching.
+When using the <em>-a</em> flag, the user has to make sure that the
+features in the different maps added to the output map do not have
+overlapping category numbers, unless identical category numbers
+reflect identical attributes, otherwise the attributes of the added
+maps are lost. To avoid this, the user can use <em>v.category
+option=sum</em> to change category values of some of the maps before
+patching.
 
 <h2>EXAMPLES</h2>