Add note on gh-pages for formatting within <details> block

[nisbet-hubbard]

Why:

Markdown formatting doesn’t render properly for gh-pages.

What's being changed (if available, include any code snippets, screenshots, or gifs):

Check off the following:

• I have reviewed my changes in staging, available via the View deployment link in this PR's timeline (this link will be available after opening the PR).

  • For content changes, you will also see an automatically generated comment with links directly to pages you've modified. The comment won't appear if your PR only edits files in the data directory.

• For content changes, I have completed the self-review checklist.

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[github-actions]

Automatically generated comment ℹ️

This comment is automatically generated and will be overwritten every time changes are committed to this branch.

The table contains an overview of files in the content directory that have been changed in this pull request. It's provided to make it easy to review your changes on the staging site. Please note that changes to the data directory will not show up in this table.

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Content directory changes

You may find it useful to copy this table into the pull request summary. There you can edit it to share links to important articles or changes and to give a high-level overview of how the changes in your pull request support the overall goals of the pull request.

Source	Preview	Production	What Changed
get-started/writing-on-github/working-with-advanced-formatting/organizing-information-with-collapsed-sections.md	fpt ghec ghes@ 3.14 3.13 3.12 3.11 3.10	fpt ghec ghes@ 3.14 3.13 3.12 3.11 3.10

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fpt: Free, Pro, Team
ghec: GitHub Enterprise Cloud
ghes: GitHub Enterprise Server

[nguyenalex836]

@nisbet-hubbard Thanks so much for opening a PR! I'll get this triaged for review ✨

[subatoi]

Hi @nisbet-hubbard, could I ask which renderer you were trying to use (that prompted this suggestion)? Was it Jekyll? Many thanks.

[nisbet-hubbard]

Yes, it was Jekyll!

[subatoi]

Thank you—I think this covers the same issue: #32988

Because of 32988, we've got an issue in our backlog that we'd like to complete internally. The solution we agreed on (that is, adding product callouts) will affect quite a few different pages when we implement it.

I'll copy @nguyenalex836 in case I've missed something, but I'm afraid we'll need to close this in favour of our internal issue (I'll raise its priority). Thank you for your interest in the Docs and helping other users 🙏