Docs - Add reference to max_array_tasks from MaxArraySize

Remove the misleading statment in MaxArraySize documentation.

Bug 11317

doc/man/man5/slurm.conf.5

-.TH "slurm.conf" "5" "Slurm Configuration File" "March 2021" "Slurm Configuration File"
+.TH "slurm.conf" "5" "Slurm Configuration File" "April 2021" "Slurm Configuration File"
 
 .SH "NAME"
 slurm.conf \- Slurm configuration file
@@ -1498,13 +1498,13 @@ exist but "/usr/bin/mail" does exist).
 
 .TP
 \fBMaxArraySize\fR
-The maximum job array size.
 The maximum job array task index value will be one less than MaxArraySize
 to allow for an index value of zero.
 Configure MaxArraySize to 0 in order to disable job array use.
 The value may not exceed 4000001.
 The value of \fBMaxJobCount\fR should be much larger than \fBMaxArraySize\fR.
 The default value is 1001.
+See also \fBmax_array_tasks\fR in SchedulerParameters.
 
 .TP
 \fBMaxDBDMsgs\fR