remove ending colon in reply-to editor overlay

app/assets/javascripts/discourse/templates/composer.hbs

@@ -22,7 +22,7 @@ so I'm going to stop rendering it until we figure out what's up
           {{plugin-outlet "composer-open"}}
 
           <div class='reply-to'>
-            {{{model.actionTitle}}}:
+            {{{model.actionTitle}}} 
             {{#if canEdit}}
               {{#if showEditReason}}
                 <div class="edit-reason-input">