Merge branch 'jnutt/fix-rate-limit-link' into 'master'

Update rate limit intro link

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/184329



Merged-by: Ashraf Khamis <akhamis@gitlab.com>
Approved-by: Keeyan Nejad <knejad@gitlab.com>
Approved-by: Ashraf Khamis <akhamis@gitlab.com>
Reviewed-by: Ashraf Khamis <akhamis@gitlab.com>
Co-authored-by: James Nutt <jnutt@gitlab.com>