Only print 'pmbootstrap log' msg to stdout
Created by: ollieparanoid
Run 'pmbootstrap log' for details.
Prevent this message from being written to the log file that gets read with "pmbootstrap log". Because when the output of "pmbootstrap log" is pasted somewhere and people analyze it, the message sounds like this is not the output of "pmbootstrap log" (like it happened today in #postmarketOS).