RFR: 8321114: Rename "Unnamed Classes" to "Implicitly Declared Classes" better [v2]

[Pavel Rappo]

> Please review this PR to correctly rename "Unnamed Class" to "Implicitly Declared Class", not "Implicit Class".
> 
> Renaming is fixed where it affects documentation or the end-user. Renaming is not fixed where it only affects code: it's perfectly okay to derive an internal element name from "Implicit Class" rather than "Implicitly Declared Class", for brevity.

Pavel Rappo has updated the pull request incrementally with one additional commit since the last revision:

  Remove a comment typo introduced in JEP 445

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16904/files
  - new: https://git.openjdk.org/jdk/pull/16904/files/089aeee2..3676b500

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16904&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16904&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/16904.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16904/head:pull/16904

PR: https://git.openjdk.org/jdk/pull/16904