unrecognized arguments --ldap-enabled for Configuring PAM

In our documentation to configure PAM (available at https://docs.couchbase.com/server/current/manage/manage-security/configure-pam.html), the following command in step 2 doesn't work with Couchbase Server 6.5.0 and 6.5.1 because "ldap-enabled" is not a recognized argument. However, these steps are provided in Couchbase 6.5.x documentation. We need to update the document with the correct option.

$ couchbase-cli setting-ldap -c 10.142.170.101:8091 -u Administrator -p U&y54wT --ldap-enabled 1

[vagrant@node1-cb651-centos7 ~]$ /opt/couchbase/bin/couchbase-cli setting-ldap -c localhost:8091 -u Administrator -p password --ldap-enabled 1

ERROR: unrecognized arguments: --ldap-enabled 1