Add a help text to the Slack Service
When setting up the service I was not sure which webhook I should use, by adding this Help text I hope we can help people in the future with setting up this hook
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
When setting up the service I was not sure which webhook I should use, by adding this Help text I hope we can help people in the future with setting up this hook