List of e-mail recipients is confusing

[tadeu]

List of e-mail recipients is being configure as ['aaa@domain.com', 'bbb@domain.com'] instead of aaa@domain.com bbb@domain.com.

[tadeu]

Does not seem to be a bug, in the documentation it says to list recipients as:

email_notification:
  recipients: "aaa@domain.com bbb@domain.com"

but it's counterintuitive, something like this is what would be expected:

email_notification:
  recipients:
    - aaa@domain.com
    - bbb@domain.com