Fix 'merge_reuests' typo

app/assets/javascripts/shortcuts_issueable.coffee

@@ -13,7 +13,7 @@ class @ShortcutsIssueable extends ShortcutsNavigation
     )
     
     if isMergeRequest
-      @enabledHelp.push('.hidden-shortcut.merge_reuests')
+      @enabledHelp.push('.hidden-shortcut.merge_requests')
     else
       @enabledHelp.push('.hidden-shortcut.issues')
 

app/views/help/_shortcuts.html.haml

@@ -187,7 +187,7 @@
                 %td.shortcut
                   .key m
                 %td Change milestone
-            %tbody{ class: 'hidden-shortcut merge_reuests', style: 'display:none' }
+            %tbody{ class: 'hidden-shortcut merge_requests', style: 'display:none' }
               %tr
                 %th
                 %th Merge Requests