RFR: 8319203: Parallel: Rename addr_is_marked_imprecise

[Albert Mingkun Yang]

Simple renaming.

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Commit messages:
 - pgc-rename

Changes: https://git.openjdk.org/jdk/pull/16445/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16445&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319203
  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/16445.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16445/head:pull/16445

PR: https://git.openjdk.org/jdk/pull/16445