wxGUI/mapswipe: update man page

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@58535 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/mapswipe/g.gui.mapswipe.html

@@ -20,7 +20,7 @@ Map Swipe allows you to:
   <li>save display to graphics file</li>
   <li>display text labels with map names</li>
   <li>choose between 'swipe' mode (default) and 'mirror' mode (synchronized maps displayed side by side) </li>
-
+  <li>change the appearance of cursor in 'mirror' mode (available in Map Swipe settings)</li>
 </ul>
 
 <center>