link r.horizon

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@39678 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.sun/r.sun.html

@@ -239,12 +239,15 @@ r.sun -s elevation.dem horizon=horangle horizonstep=30 aspin=aspect.dem \
 </pre></div>
 
 <h2>SEE ALSO</h2>
+
+<em>
+<a href="r.horizon.html">r.horizon</a>,
 <a href="r.slope.aspect.html">r.slope.aspect</a>,
 <a href="r.sunmask.html">r.sunmask</a>,
 <a href="g.proj.html">g.proj</a>,
 <a href="r.null.html">r.null</a>,
 <a href="v.surf.rst.html">v.surf.rst</a>
-
+</em>
 
 <h2>REFERENCES</h2>