[gnome-shell] MessageTray: fix typo

[Giovanni Campagna <gcampagna src gnome org>]

commit ed76b5451181d05a18c54e50034c7ae6b01f2515
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Mon May 13 23:38:23 2013 +0200

    MessageTray: fix typo

 js/ui/messageTray.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 8c24812..64fcecf 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2645,7 +2645,7 @@ const MessageTray = new Lang.Class({
         let hasRightClickMenu = this._summaryBoxPointerItem.rightClickMenu != null;
         if (this._clickedSummaryItemMouseButton == 1 || !hasRightClickMenu) {
             // Acknowledge all our notifications
-            this._summmaryBoxPointerItem.source.notifications.forEach(function(n) { n.acknowledged = true; 
});
+            this._summaryBoxPointerItem.source.notifications.forEach(function(n) { n.acknowledged = true; });
 
             this._summaryBoxPointer.bin.child = this._summaryBoxPointerItem.notificationStackWidget;