[gnome-sudoku] Revert "Tweak DifficultyCategory.to_string() some more"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 96cb3e2bcd002ed037e63770738b621cda458ce5
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Wed Apr 1 12:59:34 2015 -0500

    Revert "Tweak DifficultyCategory.to_string() some more"
    
    This reverts commit 8d57d53ff7de46d265ac3aff9475f1ba4bb6ad5e.
    
    Bring back the parallelism!

 lib/sudoku-board.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/lib/sudoku-board.vala b/lib/sudoku-board.vala
index 7675b53..691e55a 100644
--- a/lib/sudoku-board.vala
+++ b/lib/sudoku-board.vala
@@ -598,7 +598,7 @@ public enum DifficultyCategory {
             case EASY:
                 return _("Easy Puzzle");
             case MEDIUM:
-                return _("Medium Difficulty");
+                return _("Medium Puzzle");
             case HARD:
                 return _("Hard Puzzle");
             case VERY_HARD: