Update "Configuring with CLI" documentation sub-section for 5.x versions

The `--help` and `man` pages for  "couchbase-cli setting-audit" have changed between Couchbase Server 4.6 and 5.x versions.

In particular, the flag `--audit-log-rotate-interval` has changed from [MINUTES] in 4.6 to <seconds> in 5.x.

I felt the documentation was misleading, so I want to change the pages for 5.0 and 5.1 to reflect the changes in the tool's documentation.

As such, I will change:

  --audit-log-rotate-interval=[MINUTES]     //log rotation interval

  --audit-log-path=[PATH]     //target log directory

  --audit-enabled=[0|1]     //enable auditing or not

to be:

  --audit-enabled <1|0>    // Enable/disable auditing

  --audit-log-path <path>    // The audit log path

  --audit-log-rotate-interval <seconds>    // The audit log rotate interval