Fixing license template (#7)

Author: mkruskal-google

LICENSE

@@ -186,8 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2018-2021 BazelRubyContributors.
-   Copyright 2022 Google LLC
+   Copyright [yyyy] [name of copyright owner]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.