doc: update alerts manual runbook
doc: update alerts manual runbook
What
- Update link to
team.yml - Update severity value.
Why
- The team defention is in https://gitlab.com/gitlab-com/runbooks/-/blob/81ccb0689c4664a4a069eccf3a64ad839d8ba36d/services/teams.yml
- Severity is no longer
crticalorwarn