Fix typos in srun_cr man page.

NEWS

@@ -3,6 +3,7 @@ documents those changes that are of interest to users and admins.
 
 * Changes in Slurm 14.03.0pre7
 ==============================
+ -- Fixed typos in srun_cr man page.
 
 * Changes in Slurm 14.03.0pre6
 ==============================

doc/man/man1/srun_cr.1

@@ -32,10 +32,10 @@ from \fBsrun\fR.
 
 The step launch logic of SLURM is augmented to check if \fBsrun\fR is running
 under \fBsrun_cr\fR.
-If true, the environment variable \fBSURN_SRUN_CR_SOCKET\fR should be present,
+If true, the environment variable \fBSLURM_SRUN_CR_SOCKET\fR should be present,
 the value of which is the address of a Unix domain socket created and listened
 to be \fBsrun_cr\fR.
-After launching the tasks, \fBsrun\fR tires to connect to the socket and sends
+After launching the tasks, \fBsrun\fR tries to connect to the socket and sends
 the job ID, step ID and the nodes allocated to the step to \fBsrun_cr\fR.
 
 Upon checkpoint, \fRsrun_cr\fR checks to see if the tasks have been launched.