Fix URLs

index.html

@@ -104,8 +104,8 @@
     <p><strong>Converse.js</strong> depends on a few third party libraries, including: 
     <ul>
         <li><a href="http://strophe.im/strophejs" target="_blank">strophe.js</a></li>
-        <li><a href="http:/backbonejs.org" target="_blank">backbone.js</a></li>
-        <li><a href="http:/requirejs.org" target="_blank">require.js</a></li>
+        <li><a href="http://backbonejs.org" target="_blank">backbone.js</a></li>
+        <li><a href="http://requirejs.org" target="_blank">require.js</a></li>
     </ul>
     </p>