g.cairocomp: update manual page

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@54644 15284696-431f-4ddb-bdfa-cd5b030d7da7

general/g.cairocomp/g.cairocomp.html

@@ -1,9 +1,18 @@
 <h2>DESCRIPTION</h2>
 
-g.cairocomp is similar to g.pnmcomp, except that it works with X
-Pixmaps instead of PNM files.
+<em>g.cairocomp</em> is similar
+to <em><a href="g.pnmcomp.html">g.pnmcomp</a></em>, except that it
+works with X Pixmaps instead of PNM files.
+
+<h2>SEE ALSO</h2>
+
+<em>
+<a href="g.pnmcomp.html">g.pnmcomp</a>
+</em>
 
 <h2>AUTHOR</h2>
+
 Glynn Clements
 
-<p><i>Last changed: $Date$</i>
+<p>
+<i>Last changed: $Date$</i>