There are many Java libraries licensed under "Apache License, Version 2.0" that do not use its official spelling.
This causes issues like https://issues.apache.org/jira/browse/MPIR-382: with every library defining its own spelling, it's difficult in large projects to have a clear view of all licenses in use.
This PR changes the license spelling to the official one, as advised by Maven developers.
There are many Java libraries licensed under "Apache License, Version 2.0" that do not use its official spelling. This causes issues like https://issues.apache.org/jira/browse/MPIR-382: with every library defining its own spelling, it's difficult in large projects to have a clear view of all licenses in use. This PR changes the license spelling to the official one, as advised by Maven developers.