[documentreview] 404 link to some of questionnaire

[himorin]

in guide/documentreview/#how-to-get-horizontal-review, some questionnaire links like https://w3c.github.io/apa/fast/checklist.html has been moved to another place.

/cc @nigelmegitt

[ruoxiran]

Thanks, the right link of the Checklist should be: https://w3c.github.io/fast/checklist.html

[nigelmegitt]

Looks like #340 has already been opened to resolve this.

[himorin]

checked with link checker, and found no other broken link than fast checklist.
so, to be closed once #340 merged.

[himorin]

closing per #340 merged.