[gnome-shell] Fixed typo in string. Fixes bug #687248

[Daniel Mustieles García <dmustieles src gnome org>]

commit a1d37617a857b8bf5422db43fcea852488d370a0
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Mon Feb 25 14:27:31 2013 +0100

    Fixed typo in string. Fixes bug #687248

 js/ui/shellDBus.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/shellDBus.js b/js/ui/shellDBus.js
index a396758..6aaa2f0 100644
--- a/js/ui/shellDBus.js
+++ b/js/ui/shellDBus.js
@@ -47,7 +47,7 @@ const GnomeShell = new Lang.Class({
         this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(GnomeShellIface, this);
         this._dbusImpl.export(Gio.DBus.session, '/org/gnome/Shell');
 
-        this._extensionsSerivce = new GnomeShellExtensions();
+        this._extensionsService = new GnomeShellExtensions();
         this._screenshotService = new Screenshot.ScreenshotService();
     },