typo (merge from devbr6)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@35780 15284696-431f-4ddb-bdfa-cd5b030d7da7

REQUIREMENTS.html

@@ -133,7 +133,7 @@ use it at time!</I>
 <a href="http://www.unixodbc.org">http://www.unixodbc.org</a>
 
 
-<li><B>Motif or Lesstif libraries</B> (for the "xanim" <!-- and ogl3d -->
+<li><B>Motif or Lesstif libraries</B> (for the "xganim" <!-- and ogl3d -->
 module)<br>
 <a href="http://www.lesstif.org">http://www.lesstif.org</a>