[gnome-control-center] Disambiguate "Set Shortcut" string with context

[Piotr Drąg <piotrdrag src gnome org>]

commit 9daa1633e9c07be0ca759a820501e892e496a5f1
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Sep 25 01:59:45 2016 +0200

    Disambiguate "Set Shortcut" string with context

 panels/keyboard/shortcut-editor.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/panels/keyboard/shortcut-editor.ui b/panels/keyboard/shortcut-editor.ui
index 749e7f0..41bb054 100644
--- a/panels/keyboard/shortcut-editor.ui
+++ b/panels/keyboard/shortcut-editor.ui
@@ -249,7 +249,7 @@
                       <object class="GtkButton" id="change_custom_shortcut_button">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
-                        <property name="label" translatable="yes">Set Shortcut</property>
+                        <property name="label" translatable="yes" context="button">Set Shortcut</property>
                         <signal name="clicked" handler="change_custom_shortcut_button_clicked_cb" 
object="CcKeyboardShortcutEditor" swapped="yes" />
                       </object>
                       <packing>