New: Link to more information on RSS sync interval

Closes #1918

src/UI/Settings/Indexers/Options/IndexerOptionsViewTemplate.hbs

@@ -31,6 +31,7 @@
         <div class="col-sm-1 col-sm-push-2 help-inline">
             <i class="icon-sonarr-form-warning" title="This will apply to all indexers, please follow the rules set forth by them"/>
             <i class="icon-sonarr-form-info" title="Interval in minutes. Set to zero to disable (this will stop all automatic release grabbing)"/>
+            <a href="https://github.com/Sonarr/Sonarr/wiki/RSS-Sync" class="help-link" title="More information"><i class="icon-sonarr-form-info-link"/></a>
         </div>
 
         <div class="col-sm-2 col-sm-pull-1">