Fixed! 

On Sun, Sep 15, 2024, 13:50 Stefan Kangas <stefankangas@gmail.com> wrote:

Eli Zaretskii <eliz@gnu.org> writes:

> Thanks.  We don't necessarily follow the Apple's marketing spin, so
> I'm not sure we should fix these.

We already spell it macOS in our tree, so we might as well do it on the
website too, to avoid confusion.  Marketing spin or not, I think this
spelling is harmless, FWIW.

commit dc152c54f4e44f5f2040883b03f71ff6aa66c893
Author: Paul Eggert <eggert@cs.ucla.edu>
Date:   Sun Nov 6 00:33:43 2016 -0700

    Modernize usage of 'macOS' in doc and comments

    Apple changed the spelling of its operating system again, to "macOS",
    effective with macOS 10.12 Sierra (2016-09-20).  Change Emacs
    documentation and comments to match this.  Stick with older OS
    spellings ("OS X", "Mac OS X") when talking about older releases where
    the older names are more correct.