change license to mit

include/spdlog/sinks/mongo_sink.h

 /*****************************************************************************
  * mongo_sink.h
  *
- * Created: 6/27/2021 2021 by mguludag
+ * Copyright 2021 mguludag
  *
- * Copyright 2021 mguludag. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
  *
- * This file may be distributed under the terms of GNU Public License version
- * 3 (GPL v3) as defined by the Free Software Foundation (FSF). A copy of the
- * license should have been included with this file, or the project in which
- * this file belongs to. You may also find the details of GPL v3 at:
- * http://www.gnu.org/licenses/gpl-3.0.txt
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
- * If you have any questions regarding the use of this file, feel free to
- * contact the author of this file, or the owner of the project in which
- * this file belongs to.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
  *****************************************************************************/
 #pragma once
 #include "spdlog/common.h"