[gnome-terminal] help: update pref-menubar for hide/show menubar

[Ekaterina Gerasimova <egerasimov src gnome org>]

commit 2d0fa43d0ba42e014541b8a1e8ced140048ebb67
Author: Sindhu S <sindhus live in>
Date:   Tue Feb 26 19:41:45 2013 +0530

    help: update pref-menubar for hide/show menubar
    
    Added a note on setting keyboard shortcut to hide and show menubar.

 help/C/pref-menubar.page |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/help/C/pref-menubar.page b/help/C/pref-menubar.page
index 2907232..650ce13 100644
--- a/help/C/pref-menubar.page
+++ b/help/C/pref-menubar.page
@@ -63,4 +63,8 @@
     </item>
   </steps>
 
+  <note style="tip">
+    <p>You can <link xref="adv-keyboard-shortcuts">set a keyboard shortcut</link> to show and hide 
menubar.</p>
+  </note>
+
 </page>