[gnome-sudoku] Correct indentation.

[Parin Porecha <parinporecha src gnome org>]

commit 1c79ccd4169088f2a7a9bcfef10da8d8ec55262e
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Jul 21 16:07:34 2014 +0200

    Correct indentation.

 data/gnome-sudoku.ui |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/gnome-sudoku.ui b/data/gnome-sudoku.ui
index 031e7da..fc866e3 100644
--- a/data/gnome-sudoku.ui
+++ b/data/gnome-sudoku.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <!-- interface-requires gtk+ 3.10 -->
-  <object class="GtkApplicationWindow" id="sudoku_app">
+    <!-- interface-requires gtk+ 3.10 -->
+    <object class="GtkApplicationWindow" id="sudoku_app">
         <property name="title" translatable="yes">Sudoku</property>
         <child type="titlebar">
             <object class="GtkHeaderBar" id="headerbar">