RFR: 8368563: JFR: Improve jfr query help text

[Markus Grönlund]

On Mon, 29 Sep 2025 20:29:22 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> Could I have review of a PR that improves the help text for `jfr query`?
> 
> Testing: jdk/jdk/jfr
> 
> Thanks
> Erik

Marked as reviewed by mgronlun (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27558#pullrequestreview-3283183157