Update backup.config-example

Co-authored-by: Quinn Murphy <[email protected]>

Author: chuckp22

backup.config-example

@@ -34,7 +34,7 @@ GHE_NUM_SNAPSHOTS=10
 
 # Cluster filesystem to check if it's writable as part of ghe-host-check
 # By default it is /data/user/tmp but can be updated if needed
-#GHE_FILE_SYSTEM_CHECK="/data/user/tmp"
+#GHE_FILE_SYSTEM_WRITE_CHECK="/data/user/tmp"
 
 # The hostname of the GitHub appliance to restore. If you've set up a separate
 # GitHub appliance to act as a standby for recovery, specify its IP or hostname