[gnome-builder] project-tree: add Return accelerator label on context menu

[Christian Hergert <chergert src gnome org>]

commit 74bdc781bd480397b9d35811377dd009252459bc
Author: Christian Hergert <christian hergert me>
Date:   Thu May 7 12:30:44 2015 -0700

    project-tree: add Return accelerator label on context menu

 data/gtk/menus.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/gtk/menus.ui b/data/gtk/menus.ui
index 7d843db..da648d4 100644
--- a/data/gtk/menus.ui
+++ b/data/gtk/menus.ui
@@ -160,6 +160,7 @@
       <item>
         <attribute name="label" translatable="yes">_Open</attribute>
         <attribute name="action">project-tree.open</attribute>
+        <attribute name="accel">Return</attribute>
       </item>
       <submenu>
         <attribute name="label" translatable="yes">Open _With</attribute>