[gnome-dictionary] Fixed typo in string

[Daniel Mustieles García <dmustieles src gnome org>]

commit f8b4fcc8ced45c080808b96728f3e7dad9afe5bc
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Mon Apr 8 18:23:37 2013 +0200

    Fixed typo in string

 help/C/save-definition.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/save-definition.page b/help/C/save-definition.page
index a39cdc1..18e08be 100644
--- a/help/C/save-definition.page
+++ b/help/C/save-definition.page
@@ -36,7 +36,7 @@
     </item>
     <item>
       <p>Chose where you want to save the definition to and a name for the
-      file. You may want to add a <file>.txt</file> file extention to the end
+      file. You may want to add a <file>.txt</file> file extension to the end
       of the file name.</p>
     </item>
     <item>