Complete the update to 47 guide

[gorzelinski]

🚀 Summary

This PR adds the info about the new ordered list type.

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📌 Related issues

• Closes Update the v47.x update guide #19826

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💡 Additional information

Optional: Notes on decisions, edge cases, or anything helpful for reviewers.

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🧾 Checklists

Use the following checklists to ensure important areas were not overlooked.
This does not apply to feature-branch merges.
If an item is not relevant to this type of change, simply leave it unchecked.

Author checklist

• Is the changelog entry intentionally omitted?
• Is the change backward-compatible?
• Have you considered the impact on different editor setups and core interactions? (e.g., classic/inline/multi-root/many editors, typing, selection, paste, tables, lists, images, collaboration, pagination)
• Has the change been manually verified in the relevant setups?
• Does this change affect any of the above?
• Is performance impacted?
• Is accessibility affected?
• Have tests been added that fail without this change (against regression)?
• Have the API documentation, guides, feature digest, and related feature sections been updated where needed?
• Have metadata files (ckeditor5-metadata.json) been updated if needed?
• Are there any changes the team should be informed about (e.g. architectural, difficult to revert in future versions or having impact on other features)?
• Were these changes documented (in Logbook)?

Reviewer checklist

• PR description explains the changes and the chosen approach (especially when performance, API, or UX is affected).
• The changelog entry is clear, user‑ or integrator-facing, and it describes any breaking changes.
• All new external dependencies have been approved and mentioned in LICENSE.md (if any).
• All human-readable, translateable strings in this PR been introduced using t() (if any).
• I manually verified the change (e.g., in manual tests or documentation).
• The target branch is correct.

[pszczesniak]

Reviewed the areas I was involved in - LGTM 👍

[Witoso]

hey, usually update guide has almost all the release highlights? Do you plan to change the process?

[gorzelinski]

AFAIK, due to the lack of Bartek, teams are mostly responsible for particular docs. But I added those missing entries. You can check it out in your spare time. cc @Witoso

[Witoso]

One comment, otherwise ok 👍