Changing towerhost to a clickable link

I have created a notification that sends job results to our slack workspace.
The url in the messages starts with ‘https://towerhost/#/jobs/playbook/…’
How do I change ‘towerhost’ so that the url contains a clickable link?

Thanks.

After a bit more investigation, I found the solution.
In Settings, click on ‘Miscellaneous System settings’ and change the ‘Base URL of the service’ setting to whatever you want it to be.