Note about ResumeTimeout being tied to RebootProgram.

doc/man/man5/slurm.conf.5

@@ -2224,6 +2224,7 @@ Program to be executed on each compute node to reboot it. Invoked on each node
 once it becomes idle after the command "scontrol reboot_nodes" is executed by
 an authorized user or a job is submitted with the "\-\-reboot" option.
 After being rebooting, the node is returned to normal use.
+See \fBResumeTimeout\fR to configure the time you expect a reboot to finish in.
 NOTE: This configuration option does not apply to IBM BlueGene systems.
 
 .TP