docs(indexPage): update Case Studies link to new site

Author: petebacondarwin

docs/config/templates/indexPage.template.html

@@ -90,7 +90,7 @@
                     <li class="disabled"><a href="http://angularjs.org/">Why AngularJS?</a></li>
                     <li><a href="http://www.youtube.com/user/angularjs">Watch</a></li>
                     <li><a href="tutorial">Tutorial</a></li>
-                    <li><a href="http://builtwith.angularjs.org/">Case Studies</a></li>
+                    <li><a href="https://www.madewithangular.com/">Case Studies</a></li>
                     <li><a href="https://github.com/angular/angular-seed">Seed App project template</a></li>
                     <li><a href="misc/faq">FAQ</a></li>
                   </ul>