Updates to Eventing Logs

On https://docs.couchbase.com/server/6.0/eventing/eventing-debugging-and-diagnosability.html

• The paths such as /opt/couchbase/var/lib/couchbase/data/@eventing are seen with a hypen i.e., couch-base. Probably because it is split in two lines, but it is confusing for reader.
• In Log Redaction section, need to clarify that it applies only to System Logs and not User Logs