MB-12062: updated docs link again

As requested in the ticket.

Change-Id: Id86e9fd07aa6e108e5ca87bd2f6fc1bf40583f70
Reviewed-on: http://review.couchbase.org/41066
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>