[orca] Update the documentation to reflect the Learn Mode change

[Joanmarie Diggs <joanied src gnome org>]

commit db0dca4a8cd68c9e3aa250a40e1774a5dac47e91
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Oct 16 11:37:29 2013 -0400

    Update the documentation to reflect the Learn Mode change

 help/C/howto_learn_modes.page |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/howto_learn_modes.page b/help/C/howto_learn_modes.page
index 1d98b75..711709e 100644
--- a/help/C/howto_learn_modes.page
+++ b/help/C/howto_learn_modes.page
@@ -49,8 +49,8 @@
     </item>
     <item>
       <p>
-        Press <key>1</key> if you want a list of shortcuts that apply
-        <app>Orca</app>-wide, or press <key>2</key> if you want a list
+        Press <key>F2</key> if you want a list of shortcuts that apply
+        <app>Orca</app>-wide, or press <key>F3</key> if you want a list
         of shortcuts that are specifically for the application with focus.
       </p>
     </item>