Fix typo in man page.

doc/man/man5/slurm.conf.5

@@ -1635,7 +1635,7 @@ Enables gang scheduling and/or controls the mechanism used to preempt
 jobs.  When the \fBPreemptType\fR parameter is set to enable preemption, the
 \fBPreemptMode\fR selects the default mechanism used to preempt the lower
 priority jobs for the cluster. \fBPreemptMode\fR may be specified on a
-per partition basis to over ride this default value if
+per partition basis to override this default value if
 \fBPreemptType=preempt/partition_prio\fR, but a valid default \fBPreemptMode\fR
 value must be specified for the cluster as a whole when preemption is enabled.
 The \fBGANG\fR option is used to