[gnome-mines] About dialog: use en dash to indicate a range

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2ca0052f1a14fac2e1659af4279566c4d11c44e7
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Jan 20 17:53:57 2014 -0600

    About dialog: use en dash to indicate a range

 src/gnome-mines.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-mines.vala b/src/gnome-mines.vala
index aca2d76..a81b3ef 100644
--- a/src/gnome-mines.vala
+++ b/src/gnome-mines.vala
@@ -686,7 +686,7 @@ public class Mines : Gtk.Application
                                "comments",
                                _("Clear explosive mines off the board\n\nMines is a part of GNOME Games."),
                                "copyright",
-                               "Copyright \xc2\xa9 1997-2008 Free Software Foundation, Inc.",
+                               "Copyright © 1997–2008 Free Software Foundation, Inc.",
                                "license-type", Gtk.License.GPL_2_0,
                                "authors", authors,
                                "artists", artists,