Update the copyright notice

Author: khorben

src/main.c

@@ -1,5 +1,5 @@
 /* $Id$ */
-/* Copyright (c) 2007-2013 Pierre Pronchery <khorben@defora.org> */
+/* Copyright (c) 2007-2022 Pierre Pronchery <khorben@defora.org> */
 /* This file is part of DeforaOS Devel cpp */
 /* This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by