Mobile 2.1 Docs Review : x.509 Certs

Review of 

https://developer.couchbase.com/documentation/server/5.5/security/security-certs-auth.html

1) The link specified in "Instructions to generate the client certificate, private key and root CA can be found in x.509 for TLS."  , please replace with "Details on certificate based authentication support on Couchbase Server is discussed  here

2) Ideally, I think we should provide some more details on why the username in cert should match the RBAC user that is created for the SGW user and how the cert should be generated...I like this post . We can link to this post or better still re-write relevant parts of  it in context of Sync Gateway (especially to avoid navigating users off of the mobile pages ) . If it's too much work to put together specifics for SGW, then let's at least link to this post for details. Something like this - "Specifics on Sync Gateway certificate requirements and how to generate the same as discussed in this post