Update README.md

ece/README.md

@@ -25,5 +25,5 @@ To use, be ready with the required information:
 4. Check connectivity - `mpssh --nokeychk -f mpssh_hosts -l fqdns date`
 5. Create volumes - `./3_create_disks.sh`
 6. Set downtime for the hosts you are moving
-7. Shut down existing hosts - `mpssh --nokeychk -f mpssh_hosts -l fqdns date`
+7. Shut down existing hosts - `mpssh --nokeychk -f mpssh_hosts -l fqdns shutdown now`
 8. Execute the rest of the scripts in sequence.