RFR: 8367382: Expand use of representation equivalence terminology [v3]

[Raffaello Giulietti]

On Fri, 12 Sep 2025 22:06:58 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> Small doc enhancement to use the term "representation equivalence" in a few more locations.
>
> Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Respond to review feedback.

Marked as reviewed by rgiulietti (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27232#pullrequestreview-3220242364