docs(admin): document team folder creation shortcut

[hefftich]

Assisted-by: GitHub Copilot: GPT-5.6 Sol

☑️ Resolves

PR relates to this change: nextcloud/contacts#5641

🖼️ Screenshots

✅ Checklist

• I have built the documentation locally and reviewed the output

• Screenshots are included for visual changes

• I have not moved or renamed pages (or added a redirect if I did)

• I have run codespell or similar and addressed any spelling issues

[tomek2k1]

Documentation for nextcloud/contacts#5641
@hamza221: Could you please review failing checks? Should be unrelated with the changes made.

[hamza221]

Does it affect Teams app as well or only the teams Ui in the contacts app ?

[hefftich]

@hamza221
It affects the Teams UI, which is currently provided by the Contacts app. The setting only hides the “Create shared folder” shortcut; it does not disable existing team folders or prevent sharing a personal folder with a team.

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