Update upgrade-4.13.rst (#108)

Author: andrijapanicsb

source/upgrading/upgrade/upgrade-4.13.rst

@@ -99,7 +99,7 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
       $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql