g.gui.timeline manual: fix link

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@57498 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/timeline/g.gui.timeline.html

@@ -27,7 +27,7 @@ Features:
 
 <em>
   <a href="wxGUI.html">wxGUI</a><br>
-  <a href="wxGUI.Components.html">wxGUI components</a>
+  <a href="wxGUI.components.html">wxGUI components</a>
 </em>
 
 <h2>AUTHOR</h2>