Erlang path needs to be updated in docs starting from version 6.5.0

Starting from Couchbase Server version 6.5.0, the beam.smp process executes based on "/opt/couchbase/lib/erlang/erts-9.3.3.9/bin/" which is the updated path. However, as per 6.5.x or 6.6 docs it's still referring to the old path (/opt/couchbase/lib/erlang/erts-5.10.4.0.0.1/bin/) which needs to be updated as this will have an impact while configuring the encryption at rest using Vormetric.

Doc link: https://docs.couchbase.com/server/current/install/server-processes.html