Update index.html

Author: Igor Khomenko

samples/webrtc/index.html

@@ -253,7 +253,7 @@ <h4>Call from <strong class="j-ic_initiator"></strong></h4>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
 
-    <script src="../../quickblox.js"></script>
+    <script src="../../quickblox.min.js"></script>
 
     <script src="config.js"></script>
     <script src="js/msgBoard.js"></script>