[quadrapassel] About dialog: use en dash to indicate range

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 83761c8fcc23cd664b758f11258a3dafe29ee235
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Jan 20 17:46:49 2014 -0600

    About dialog: use en dash to indicate range

 src/quadrapassel.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/quadrapassel.vala b/src/quadrapassel.vala
index 5f48cd1..bc8f69b 100644
--- a/src/quadrapassel.vala
+++ b/src/quadrapassel.vala
@@ -742,7 +742,7 @@ public class Quadrapassel : Gtk.Application
                                "program-name", _("Quadrapassel"),
                                "version", VERSION,
                                "comments", _("A classic game of fitting falling blocks 
together\n\nQuadrapassel is a part of GNOME Games."),
-                               "copyright", "Copyright \xc2\xa9 1999 J. Marcin Gorycki, 2000-2009 Others",
+                               "copyright", "Copyright © 1999 J. Marcin Gorycki, 2000–2009 Others",
                                "license-type", Gtk.License.GPL_2_0,
                                "authors", authors,
                                "documenters", documenters,