Merge branch 'nh/fix-audit-event-types-docs-patterns' into 'master'

Update code pattern for audit event types docs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143977



Merged-by: Jennifer Li <jli@gitlab.com>
Approved-by: Jennifer Li <jli@gitlab.com>
Co-authored-by: Nao Hashizume <nhashizume@gitlab.com>