[jdk16] RFR: 8257637: Update usage of "type" terminology in java.lang.annotation

[Julia Boes]

This change is in line with upcoming changes in the JLS terminology ('type' versus 'class and interface').

For background see: https://download.java.net/java/early_access/jdk16/docs/specs/class-terminology-jls.html

For easier reviewing, paragraphs will only be reflowed before the PR is integrated.

-------------

Commit messages:
 - revert field name change
 - two more changes
 - Merge branch '8257637' of github.com:FrauBoes/jdk16 into 8257637
 - intial pass

Changes: https://git.openjdk.java.net/jdk16/pull/27/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16&pr=27&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257637
  Stats: 76 lines in 9 files changed: 0 ins; 0 del; 76 mod
  Patch: https://git.openjdk.java.net/jdk16/pull/27.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/27/head:pull/27

PR: https://git.openjdk.java.net/jdk16/pull/27