[devhelp] App: update copyright in about dialog for 2018

[Sébastien Wilmet <swilmet src gnome org>]

commit 7f8a8393db70f4bff948f068f61903258dcf4da3
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Jan 7 14:38:17 2018 +0100

    App: update copyright in about dialog for 2018

 src/dh-app.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/dh-app.c b/src/dh-app.c
index 228bfc9..5e48578 100644
--- a/src/dh-app.c
+++ b/src/dh-app.c
@@ -87,7 +87,7 @@ about_cb (GSimpleAction *action,
                                "website-label", _("Devhelp Website"),
                                "logo-icon-name", PACKAGE_TARNAME,
                                "license-type", GTK_LICENSE_GPL_2_0,
-                               "copyright", "Copyright 2001-2017 – the Devhelp team",
+                               "copyright", "Copyright 2001-2018 – the Devhelp team",
                                NULL);
 }