Fix doc build failure

[MetRonnie]

Follow-up to #6909

First one to review can merge

Check List

• I have read CONTRIBUTING.md and added my name as a Code Contributor.
• Contains logically grouped changes (else tidy your branch by rebase).
• Does not contain off-topic changes (use other PRs for other changes).
• No stuff
• If this is a bug fix, PR should be raised against the relevant ?.?.x branch.

[MetRonnie]

bash and tutorial test failures unrelated flakiness

[hjoliver]

(oops, sorry!)