[gnome-terminal/mallard-help] Help: Added a note about the menubar visibilty affecting settings.

[Sindhu S <sindhus src gnome org>]

commit 5ea22d55c170267a3622ea71a2dec2cb8312b760
Author: Sindhu S <sindhus live in>
Date:   Tue Feb 26 21:42:38 2013 +0530

    Help: Added a note about the menubar visibilty affecting settings.

 help/C/pref-keyboard-access.page |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/help/C/pref-keyboard-access.page b/help/C/pref-keyboard-access.page
index 328bb4f..df084a6 100644
--- a/help/C/pref-keyboard-access.page
+++ b/help/C/pref-keyboard-access.page
@@ -28,6 +28,10 @@
 
   <title>Keyboard accessibility</title>
 
+  <note style="important">
+    <p>These settings work only when the <app>Terminal</app> menubar is set to be visible.</p>
+  </note>
+
   <p>You can navigate the <app>Terminal</app> menu using a combination
   of keys. You can access them in the following ways:</p>