Update customers.gitlab.com cheat sheet to prevent outages
Originating incident: production#1763 (closed) Incident review: https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/9488
Update the page in the dotcom documentation to reflect running the console as the gitlab-customers
user and not as root.
The location that needs updated: https://gitlab.com/gitlab-com/support/dotcom/dotcom-internal/-/wikis/Customers-Console-Rails-Cheat-Sheet A source showing the proper commands: https://gitlab.com/gitlab-org/customers-gitlab-com/#accessing-production-as-an-admin-and-logs-and-console