Merge branch 'jy-restore-ai-gateway-url-step' into 'master'

AI dev docs refresh

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/163075



Merged-by: Leaminn Ma <lma@gitlab.com>
Approved-by: Jeff Park <jpark@gitlab.com>
Approved-by: Leaminn Ma <lma@gitlab.com>
Reviewed-by: Jeff Park <jpark@gitlab.com>
Co-authored-by: Jessie Young <jessieyoung@gitlab.com>