RFR: 8250596: Update remaining manpage references from "OS X" to "macOS"

[Serguei Spitsyn]

On Thu, 4 May 2023 15:50:02 GMT, Adam Sotona <asotona at openjdk.org> wrote:

> Most of the manpages were updated a few years ago but some references remain.
> This patch renames remaining references to "macOS".
> 
> Please review.
> 
> Thanks,
> Adam

Marked as reviewed by sspitsyn (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13807#pullrequestreview-1414295424