Docs - AllowSpecResourcesUsage use YES/NO instead of 0/1

The API part/results of scontrol show config where changed by
4ad1e215.

Bug 8260.

doc/man/man5/slurm.conf.5

@@ -301,10 +301,10 @@ acct_gather.conf file.
 
 .TP
 \fBAllowSpecResourcesUsage\fR
-If set to 1, Slurm allows individual jobs to override node's configured
+If set to "YES", Slurm allows individual jobs to override node's configured
 CoreSpecCount value. For a job to take advantage of this feature,
 a command line option of \-\-core\-spec must be specified.  The default
-value for this option is 1 for Cray systems and 0 for other system types.
+value for this option is "YES" for Cray systems and "NO" for other system types.
 
 .TP
 \fBAuthAltTypes\fR