Release Note: "Type" Terminology in Generated Documentation

In line with guidelines described elsewhere [1][2], the Standard Doclet uses the following terms when generating documentation for JDK 16 or later. For consistency, the older terms will continue to be used when generating documentation for older releases.

* _Classes and Interfaces_ (instead of _Types_)
* _Annotation Interface_ (instead of _Annotation Type_)
* _Enum Class_ (instead of _Enum_)
* _Record Class_ (instead of _Record_)

[1]: https://docs.oracle.com/en/java/javase/15/docs/specs/class-terminology-jls.html
[2]: https://docs.oracle.com/en/java/javase/16/docs/specs/class-terminology-jls.html