[gnome-shell] windowAttentionHandler: Fix typo

[Florian Müllner <fmuellner src gnome org>]

commit e765e684c3571c98a22b5b425e1b9ae23a2b445f
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Oct 26 19:54:09 2017 +0200

    windowAttentionHandler: Fix typo
    
    Gah, thanks Alessandro Bono for the quick catch ...

 js/ui/windowAttentionHandler.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/windowAttentionHandler.js b/js/ui/windowAttentionHandler.js
index edd671a..4617193 100644
--- a/js/ui/windowAttentionHandler.js
+++ b/js/ui/windowAttentionHandler.js
@@ -79,7 +79,7 @@ var Source = new Lang.Class({
         this.signalIDs = [];
     },
 
-    _createPoliy: function() {
+    _createPolicy: function() {
         if (this._app && this._app.get_app_info()) {
             let id = this._app.get_id().replace(/\.desktop$/,'');
             return new MessageTray.NotificationApplicationPolicy(id);