[jdk23u] RFR: 8335904: Fix invalid comment in ShenandoahLock

[Xiaolong Peng]

Trivial change to fix the wrong comment introduced by https://bugs.openjdk.org/browse/JDK-8331411, JDK-8331411 has been backported to jdk23.

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Commit messages:
 - Backport bb1f8a1698553d5962569ac8912edd0d7ef010dd

Changes: https://git.openjdk.org/jdk23u/pull/47/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk23u&pr=47&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335904
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk23u/pull/47.diff
  Fetch: git fetch https://git.openjdk.org/jdk23u.git pull/47/head:pull/47

PR: https://git.openjdk.org/jdk23u/pull/47