ci: building LTS docs

[Borda]

What does this PR do?

updating docs building for LTS, related to links in #17197

Before submitting

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• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you list all the breaking changes introduced by this pull request?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or minor internal changes/refactors)

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Anyone in the community is welcome to review the PR.
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Reviewer checklist

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cc @Borda @carmocca @akihironitta @tchaton

[github-actions]

⚡ Required checks status: All passing 🟢

No groups match the files changed in this PR.

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Thank you for your contribution! 💜

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