Cherry-pick of a trivial fix (JDK-8382843) to update ProblemList comments for preview features.
--------- - [X] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8382852: [lworld] cherry-pick JDK-8382843 Update ProblemList comments for preview features Changes: https://git.openjdk.org/valhalla/pull/2358/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2358&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8382852 Stats: 159 lines in 23 files changed: 90 ins; 0 del; 69 mod Patch: https://git.openjdk.org/valhalla/pull/2358.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2358/head:pull/2358 PR: https://git.openjdk.org/valhalla/pull/2358
