[gnome-games] shortcuts-window: Add shortcut entry to display ShortcutsWindow

[Alexander Mikhaylenko <alexm src gnome org>]

commit 3e734b215ee44f292795fbf48cd70c588619d9ba
Author: Neville <nevilleantony98 gmail com>
Date:   Fri May 1 13:42:50 2020 +0530

    shortcuts-window: Add shortcut entry to display ShortcutsWindow

 data/ui/shortcuts-window.ui | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/data/ui/shortcuts-window.ui b/data/ui/shortcuts-window.ui
index 9f10db9c..4cd656cc 100644
--- a/data/ui/shortcuts-window.ui
+++ b/data/ui/shortcuts-window.ui
@@ -41,6 +41,13 @@
                 <property name="accelerator">&lt;Primary&gt;F</property>
               </object>
             </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">True</property>
+                <property name="title" translatable="yes" context="shortcut window">Show Shortcuts</property>
+                <property name="accelerator">&lt;ctrl&gt;question</property>
+              </object>
+            </child>
             <child>
               <object class="GtkShortcutsShortcut">
                 <property name="visible">True</property>