gui: Reformat HTML & JS for consistent white space

(white space only change)

gui/default/syncthing/core/discoveryFailuresModalView.html

@@ -8,7 +8,7 @@
     <div class="col-md-offset-2 col-md-8">
       <div class="panel panel-default">
         <div translate class="panel-body">
-         Failure to connect to IPv6 servers is expected if there is no IPv6 connectivity.
+          Failure to connect to IPv6 servers is expected if there is no IPv6 connectivity.
         </div>
       </div>
     </div>