[gtk+] docs: update copyright text

[William Jon McCann <mccann src gnome org>]

commit 77da3f5cc2f46569ed68e2c35ec83dae1c269cca
Author: William Jon McCann <william jon mccann gmail com>
Date:   Wed Jul 17 15:06:15 2013 -0400

    docs: update copyright text

 docs/tools/widgets.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/tools/widgets.c b/docs/tools/widgets.c
index 022389c..3daf70b 100644
--- a/docs/tools/widgets.c
+++ b/docs/tools/widgets.c
@@ -991,7 +991,7 @@ create_about_dialog (void)
   g_object_set (widget,
                 "program-name", "GTK+ Code Demos",
                 "version", PACKAGE_VERSION,
-                "copyright", "(C) 1997-2009 The GTK+ Team",
+                "copyright", "© 1997-2013 The GTK+ Team",
                 "website", "http://www.gtk.org";,
                 "comments", "Program to demonstrate GTK+ functions.",
                 "logo-icon-name", "help-about",