Docs feedback: EWM integration. Test button does not exist in current SaaS version

Link: https://docs.gitlab.com/ee/user/project/integrations/ewm.html

Issue description: Item 6: No test settings button exists in the integration configuration screen

Proposed solution: Please consider implementing/restoring the button in the integration screen, instead of just deleting the line on the documentation. Getting this integration to work is currently problematic.