production-ready

Contact Details [Optional]

support@zenml.io

Describe the feature you'd like

When someone uses the zenml secret register --help command, the formatting of the CLI help information comes out wrong with line breaks not really happening. It isn't possible to read the text printed to the terminal as executed within [the register_secret function](https://github.com/zenml-io/zenml/blob/373

This will allow site admins to blacklist certain domains from creating account from site settings in dashboard.