RFR: 8331873: Improve/expand info in `New API In` on Help page

[Hannes Wallnöfer]

On Mon, 13 May 2024 23:08:51 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

> Please review a relatively simple update to the generated Help page, as part of the ongoing campaign to improve the documentation around the overall use of `@since` tags.

Sorry for losing sight of this PR. I propose a slight change of wording. It would be nice if we could still get this into 24.

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PR Comment: https://git.openjdk.org/jdk/pull/19222#issuecomment-2511898946