[9.0] [docs] fix external links (#2826)

[marciw]

Backport

This will backport the following commits from main to 9.0:

• fix external links (#2826)

Questions ?

Please refer to the Backport tool documentation

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[pquentin]

Thanks! LGTM. Note that you can get automatic backports by applying a backport X.Y label to any pull request, even after it was merged.