remove reference to the project page, point users to the products page instead

mail/base/locale/start.html

@@ -94,7 +94,7 @@ a:active, a:hover {
 </ul>
 <h2>More Information</h2>
 <p>For frequently asked questions, tips and general help, visit <a href="http://texturizer.net/thunderbird/">Mozilla Thunderbird Help</a>.</p>
-<p>For development information, visit the <a href="http://www.mozilla.org/projects/thunderbird/">Mozilla Thunderbird Project Page</a>.
+<p>For product information, visit the <a href="http://www.mozilla.org/products/thunderbird/">Mozilla Thunderbird Product Page</a>.
 <div id="gecko"><a href="http://www.mozilla.org/">Powered by Gecko.</a></div>
 </div>