cli: add comma to clarify instructions after app registration

[tennox]

I was a bit confused and read: "on the next run, use this command instead" Only to realize I have to do it next to have my app published 😅

Summary

This PR fixes/implements the following bugs/features

• [x] cli text change

[bgins]

Yeah, that is better with the comma there! Thanks for the PR, much appreciated. 🙏