[gnome-commander] Add missing word in documentation

[Uwe Scholz <uwescholz src gnome org>]

commit 387ab7e8c25bbf5d695c0bd1386bf34d49904d2c
Author: Uwe Scholz <uwescholz src gnome org>
Date:   Mon Sep 25 19:01:36 2017 +0200

    Add missing word in documentation

 doc/C/index.docbook |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/doc/C/index.docbook b/doc/C/index.docbook
index d998f3f..4ff94dd 100644
--- a/doc/C/index.docbook
+++ b/doc/C/index.docbook
@@ -4547,7 +4547,7 @@
                 <note>
                   <para>By selecting this option you alter the standard GNOME behavior
                   and to access the menus with the keyboard you will need to use the
-                  <keycap>F10</keycap>.</para>
+                  <keycap>F10</keycap> key.</para>
                 </note>
               </entry>
             </row>