DOC-13706: Query REST API spec update natural_cred (#208)

Build output documentation

Author: simon-dew

docs/modules/n1ql-rest-query/pages/index.adoc

@@ -2023,6 +2023,8 @@ a¦ [.status]##Couchbase Server 8.0##
 The Couchbase Capella user account credentials for a natural language request, in the form `username:password`.
 Be careful not to expose the credentials in log files or other output.
 
+This parameter does not support single sign-on (SSO), multi-factor authentication (MFA), or social login credentials such as Google or GitHub.
+
 Natural language requests use the Couchbase Capella iQ service as a backend.
 To make a natural language request, you must have a Couchbase Capella user account.