r.mapcalc: remove illegal p tag in div code pre tags (fix compilation for https://trac.osgeo.org/grass/changeset/58767)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@58769 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.mapcalc/r.mapcalc.html

@@ -477,7 +477,7 @@ Extra care must be taken if the expression is given on the command line.
 Some characters have special meaning to the UNIX shell.
 These include, among others:
 <div class="code"><pre>
-<p>* ( ) &gt; &amp; |
+* ( ) &gt; &amp; |
 </pre></div>
 <p>It is advisable to put single quotes around the expression; e.g.:
 <div class="code"><pre>