[four-in-a-row] menu: Add F10 as accelerator to open menu

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f8d53cd1b8d79d56bc2a3c18f5e96a86f4d739fd
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Thu Jan 10 14:28:46 2019 -0500

    menu: Add F10 as accelerator to open menu

 data/four-in-a-row.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/four-in-a-row.ui b/data/four-in-a-row.ui
index 07bc56c..7f7c625 100644
--- a/data/four-in-a-row.ui
+++ b/data/four-in-a-row.ui
@@ -40,6 +40,7 @@
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
+            <accelerator key="F10" signal="activate"/>
             <child>
               <object class="GtkImage">
                 <property name="visible">True</property>