docs:monitor: Fill in the power_off_config attribute details

The `power_off_config` attribute contains a list of power off rules
based on the monitoring state of the fans configured. These power off
rules can perform different system power off types to protect a system
that is not able to provide enough cooling due to missing or
nonfunctional fans.

Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
Change-Id: Idabaa3a2bb626d3b9048506ed23cd50fb9377f00
1 file changed