RFR: 8337111: Bad HTML checker for generated documentation [v4]

[Nizar Benalla]

On Wed, 4 Sep 2024 18:39:15 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

>> Can I please get a review for this PR that adds 4 new html "Checkers" for the generated documentation.
>> More details are in the JBS issues
>> 
>> These tests were mostly inspired /converted from the existing [Doccheck](https://github.com/openjdk/doccheck).
>
> Nizar Benalla has updated the pull request incrementally with one additional commit since the last revision:
> 
>   make test run with executors by default

Closing this for now, I need time to adapt parts of this

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PR Comment: https://git.openjdk.org/jdk/pull/20711#issuecomment-2349049489