Fixes lib filename.

index.html

     <script>console.log("(TIME) index.html loaded:\t", window.performance.now());</script>
     <script src="config.js?v=15"></script><!-- adapt to your needs, i.e. set hosts and bosh path -->
     <script src="interface_config.js?v=6"></script>
-    <script src="libs/lib-jitsi-meet.js?v=139"></script>
+    <script src="libs/lib-jitsi-meet.min.js?v=139"></script>
     <script src="libs/app.bundle.min.js?v=139"></script>
     <!--
         Link used for inline installation of chrome desktop streaming extension,