Doc guards

[mpg]

Description

Resolves #8736

PR checklist

Please tick as appropriate and edit the reasons (e.g.: "backport: not needed because this is a new feature")

• [ ] changelog provided, or not required
• [ ] 3.6 backport done, or not required
• [ ] 2.28 backport done, or not required
• [ ] tests provided, or not required