Documentation is wrong

Hello,

I have been following the documentation here for custom message and cache relays, however the options don't exist:

Installer command-line options for Linux - Sophos Central Admin

This suggests --message-realys=IPADDRESS:8190 and --update-caches=IPADDRESS:8191

However, when trying to use these options on the SophosSetup.sh file, it reports these don't exist:

Error: Unexpected argument given: --message-relays=x.x.x.x:8190 --- aborting install. Please see '--help' output for list of valid arguments

After reading the SophosSetup.sh file, I have identified the correct way is to add these configurations to a text file called "credentials.txt"

Such as:

MESSAGE_RELAYS=x.x.x.x:8190
UPDATE_CACHES=x.x.x.x:8191

Thanks.