[lworld] RFR: 8327702: [lworld] Update java.lang.Object mention of value classes

[Roger Riggs]

Correct java.lang.Object doc for identity and value classes

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Commit messages:
 - 8327702: [lworld] Update java.lang.Object mention of value classes

Changes: https://git.openjdk.org/valhalla/pull/1041/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1041&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327702
  Stats: 7 lines in 1 file changed: 0 ins; 4 del; 3 mod
  Patch: https://git.openjdk.org/valhalla/pull/1041.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1041/head:pull/1041

PR: https://git.openjdk.org/valhalla/pull/1041