[gnome-chess] Make translator credits translatable

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f6038d946f2c066d5786ec40da5e8613c1de5976
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Aug 11 16:27:24 2013 -0500

    Make translator credits translatable
    
    Otherwise you get no translator credits!

 src/gnome-chess.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-chess.vala b/src/gnome-chess.vala
index 38e16f4..7ac84b9 100644
--- a/src/gnome-chess.vala
+++ b/src/gnome-chess.vala
@@ -1737,7 +1737,7 @@ public class Application : Gtk.Application
         about_dialog.comments = _("The 2D/3D chess game for GNOME. \n\nGNOME Chess is a part of GNOME 
Games.");
         about_dialog.authors = authors;
         about_dialog.artists = artists;
-        about_dialog.translator_credits = "translator-credits";
+        about_dialog.translator_credits = _("translator-credits");
         about_dialog.website = "http://www.gnome.org/projects/gnome-games/";;
         about_dialog.website_label = _("GNOME Games web site");
         about_dialog.logo_icon_name = "gnome-chess";