Better link for MPL.

js/rhino/docs/download.html

@@ -171,7 +171,7 @@ the zip files above and unzip it.</p>
 
 <h2><a name="source" id="source">Source</a></h2>
 <p>The source code for Rhino is available under <a
-href="http://www.mozilla.org/MPL/MPL-1.1.html">MPL 1.1</a>/GPL 2.0 license. In addition to 
+href="http://www.mozilla.org/MPL/">MPL</a> 1.1/GPL 2.0 license. In addition to 
 getting the source from the zip files above, the source code for 
 Rhino can be found in the CVS tree at mozilla/js/rhino. See <a
 href="http://developer.mozilla.org/en/docs/Mozilla_Source_Code_Via_CVS">source code via cvs</a> for details on how to set up CVS, define your CVSROOT, and login. Once