Update license header of JS files

src/palette/qml/MuseScore/Palette/internal/utils.js

@@ -1,22 +1,24 @@
-//=============================================================================
+/*
-//  MuseScore
+ * SPDX-License-Identifier: GPL-3.0-only
-//  Music Composition & Notation
+ * MuseScore-CLA-applies
-//
+ *
-//  Copyright (C) 2019 Werner Schweer and others
+ * MuseScore
-//
+ * Music Composition & Notation
-//  This program is free software; you can redistribute it and/or modify
+ *
-//  it under the terms of the GNU General Public License version 2.
+ * Copyright (C) 2021 MuseScore BVBA and others
-//
+ *
-//  This program is distributed in the hope that it will be useful,
+ * This program is free software: you can redistribute it and/or modify
-//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * it under the terms of the GNU General Public License version 3 as
-//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * published by the Free Software Foundation.
-//  GNU General Public License for more details.
+ *
-//
+ * This program is distributed in the hope that it will be useful,
-//  You should have received a copy of the GNU General Public License
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-//  along with this program; if not, write to the Free Software
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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 <https://www.gnu.org/licenses/>.
+ */
 .pragma library
 
 var style = {