[gnome-sudoku] Improve titles

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 866eb836461de82a73b0bc72a2712853db14014e
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Sep 28 11:54:58 2014 -0500

    Improve titles

 lib/sudoku-board.vala |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/lib/sudoku-board.vala b/lib/sudoku-board.vala
index 4096273..9888739 100644
--- a/lib/sudoku-board.vala
+++ b/lib/sudoku-board.vala
@@ -569,13 +569,13 @@ public enum DifficultyCategory {
             case UNKNOWN:
                 return _("Unknown Difficulty");
             case EASY:
-                return _("Easy Difficulty");
+                return _("Easy Puzzle");
             case MEDIUM:
-                return _("Medium Difficulty");
+                return _("Medium Puzzle");
             case HARD:
-                return _("Hard Difficulty");
+                return _("Hard Puzzle");
             case VERY_HARD:
-                return _("Very Hard Difficulty");
+                return _("Very Hard Puzzle");
             default:
                 assert_not_reached ();
         }