Makes the live output statement more clearer

[tclh123]

It will display "The execution is yet to produce any live output" even the action is already running but not not support live output as the action is running on multi hosts. I think we can make the statement more clearer. Otherwise, it reads like the action is not produce output yet.

[arm4b]

Thanks for the enhancement proposal! That makes sense. We also accept Pull Requests.