initctl: add helpful hint when showing/editing built-in services
initctl: add helpful hint when showing/editing built-in services

Built-in services, like keventd, do not have a .conf file to edit.

Signed-off-by: Joachim Wiberg <583c295fd7602c168ad814279bbc3894ba65f5d6@gmail.com>

troglobit/finit,troglobit/finit