RFR: 8257639: Update usage of "type" terminology in java.lang.Enum & java.lang.Record

[Julia Boes]

This change applies a stricter semantic distinction of 'type' versus 'class and interface'. This is based on the JLS changes described in the "Consistent Class and Interface Terminology" document: https://download.java.net/java/early_access/jdk16/docs/specs/class-terminology-jls.html.

The following rules were applied:
- 'class' and/or 'interface' are used when referring to the class/interface itself
- 'type' is used when referring to the type of a variable or expression

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Commit messages:
 - replace one more occurrence
 - change type to class in java.lang.Record
 - change type to class in Enum.java

Changes: https://git.openjdk.java.net/jdk/pull/1670/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1670&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257639
  Stats: 24 lines in 2 files changed: 0 ins; 0 del; 24 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1670.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1670/head:pull/1670

PR: https://git.openjdk.java.net/jdk/pull/1670