controller.cfg: documentation clarifications
controller.cfg: documentation clarifications

Clarified the some of the documentation within controller.cfg

Signed-off-by: Lynn 'Cyrin' Conway <5b68ce331825ec082889a5af4f6beceed357d4a2@gmail.com>

denny820909/builder,denny820909/builder,denny820909/builder,denny820909/builder