Group: Respond - Investigate and remove HTML comments in markdown file
Issue Description
Follows gitlab#413204 (closed)
Notes for the TW: please coordinate with your groups for the removal of the text if it is no longer required.
doc/operations/incident_management/slack.md
- https://gitlab.com/gitlab-org/gitlab/-/blob/7d014b70a559f8e2e79ffea11f8c2a339c401b86/doc/operations/incident_management/slack.md#L22-23
- https://gitlab.com/gitlab-org/gitlab/-/blob/7d014b70a559f8e2e79ffea11f8c2a339c401b86/doc/operations/incident_management/slack.md#L47-57
- https://gitlab.com/gitlab-org/gitlab/-/blob/7d014b70a559f8e2e79ffea11f8c2a339c401b86/doc/operations/incident_management/slack.md#L97-113