update repo links

Author: spdegabrielle

static/index.html

@@ -81,8 +81,8 @@
 	      <li><a href="#example/archery">Archery</a></li>
 	    </ul>
 	  </li>
-	  <li><a href="https://github.com/vishesh/racketscript" target="_blank"><span class="glyphicon glyphicon-github" aria-hidden="true"></span> RacketScript on Github</a></li>
-	  <li><a href="https://github.com/vishesh/racketscript-playground" target="_blank"><span class="glyphicon glyphicon-github" aria-hidden="true"></span> Playground on Github</a></li>
+	  <li><a href="https://github.com/racketscript/racketscript" target="_blank"><span class="glyphicon glyphicon-github" aria-hidden="true"></span> RacketScript on Github</a></li>
+	  <li><a href="https://github.com/racketscript/racketscript-playground" target="_blank"><span class="glyphicon glyphicon-github" aria-hidden="true"></span> Playground on Github</a></li>
         </ul>
 
         <ul class="nav navbar-nav navbar-right">