RFR: 7903683 Document how to run individual self-tests [v3]

[Jaikiran Pai]

On Thu, 14 Mar 2024 15:17:05 GMT, Ludvig Janiuk <lujaniuk at openjdk.org> wrote:

>> Add documentation on how to run individual self-tests with their ".ok" files to building.md.
>
> Ludvig Janiuk has updated the pull request incrementally with one additional commit since the last revision:
> 
>   accepting jaikiran's formulation

Thank you Ludvig for the update. The latest state looks good to me.

(I'm not a Reviewer)

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Marked as reviewed by jpai (no project role).

PR Review: https://git.openjdk.org/jtreg/pull/184#pullrequestreview-1937035214