[gnome-tweak-tool] Add domain="gnome-tweak-tool" into shell.ui for gettext

[Yosef Or Boczko <yoseforb src gnome org>]

commit ecda3ac0f581edd016190f948f7b5fb17c746df5
Author: Yosef Or Boczko <yoseforb gmail com>
Date:   Tue Aug 20 01:48:27 2013 +0300

    Add domain="gnome-tweak-tool" into shell.ui for gettext
    
    This allowing to translate the content of the app menu.

 data/shell.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/shell.ui b/data/shell.ui
index 786ca7e..0bdad93 100644
--- a/data/shell.ui
+++ b/data/shell.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<interface>
+<interface domain="gnome-tweak-tool">
   <!-- interface-requires gtk+ 3.6 -->
   <menu id="appmenu">
    <section>