New copyright header

Author: lenemter

vapi/config.vapi

@@ -1,19 +1,9 @@
-//
-//  Copyright (C) 2011 Robert Dyer, Rico Tzschichholz
-//
-//  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
-//  the Free Software Foundation, either version 3 of the License, or
-//  (at your option) any later version.
-//
-//  This program is distributed in the hope that it will be useful,
-//  but WITHOUT ANY WARRANTY; without even the implied warranty of
-//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//  GNU General Public License for more details.
-//
-//  You should have received a copy of the GNU General Public License
-//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-//
+/*
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ * SPDX-FileCopyrightText: 2025 elementary, Inc. (https://elementary.io)
+ *                         2011 Robert Dyer
+ *                         2011 Rico Tzschichholz
+ */
 
 [CCode (cprefix = "", lower_case_cprefix = "", cheader_filename = "config.h")]
 namespace Config {