Update license copyright year.
same "printed page" as the copyright notice for easier
identification within third-party archives.
- Copyright 2016-2021 Vicente Eduardo Ferrer Garcia <vic798@gmail.com>
+ Copyright 2016-2022 Vicente Eduardo Ferrer Garcia <vic798@gmail.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
