Fix format error.

doc/man/man1/sbcast.1

@@ -10,7 +10,7 @@ sbcast \- transmit a file to the nodes allocated to a SLURM job.
 \fBsbcast\fR is used to transmit a file to all nodes allocated 
 to the currenly active SLURM job.
 This command should only be executed from within a SLURM batch
-job or within the shell spawned after a SLURM job's resource 
+job or within the shell spawned after a SLURM job\'s resource 
 allocation. 
 \fBSOURCE\fR is the name of a file on the current node.
 \fBDEST\fR should be the fully qualified pathname for the