[gnome-2048] Improve a string

[Piotr Drąg <piotrdrag src gnome org>]

commit 405351f492577b9ba17e8cfb57895f1fa15d83ba
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Feb 14 00:47:37 2015 +0100

    Improve a string
    
    One ! is enough. :)

 src/application.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/application.vala b/src/application.vala
index 74d0465..ac831b3 100644
--- a/src/application.vala
+++ b/src/application.vala
@@ -122,7 +122,7 @@ public class Application : Gtk.Application
       debug ("finished");
     });
     _game.target_value_reached.connect ((s, v) => {
-      _header_bar.subtitle = _("Congratulations!!");
+      _header_bar.subtitle = _("Congratulations!");
       debug ("target value reached");
     });
   }