DOCSP-12957: [BIC] update Atlas connection example (#287)

Author: steveren

source/reference/mongosqld.txt

@@ -997,10 +997,6 @@ default.
    write data as temporary files to disk. To review the MongoDB Atlas free
    tier constraints, see the `MongoDB Atlas manual   <https://docs.atlas.mongodb.com/create-new-cluster/#service-m0-free-tier-limitations>`_.
 
-To connect the {+download-center-bi+}
-to an Atlas cluster, you must provide :binary:`~bin.mongosqld` with a
-``.pem`` key file.
-
 :binary:`~bin.mongosqld` can use any valid TLS certificate issued by a
 certificate authority, or a self-signed certificate. If you use a
 self-signed certificate, although the communications channel will be
@@ -1013,38 +1009,39 @@ MySQL client to verify the server's identity.
 For *testing* purposes, you can create a ``.pem`` key file named ``test.pem``
 using the ``openssl`` tool:
 
-
 .. code-block:: sh
 
    openssl req -nodes -newkey rsa:2048 -keyout test.key -out test.crt -x509 -days 365 -subj "/C=US/ST=test/L=test/O=test Security/OU=IT Department/CN=test.com"
    cat test.crt test.key > test.pem
 
-Start :binary:`~bin.mongosqld` with the :option:`--auth
-<mongosqld --auth>` and :option:`--sslPEMKeyFile
-<mongosqld --sslPEMKeyFile>` options.
-
-If you named your key file ``test.pem`` as in the previous example, you
-can run the following, substituting your :ref:`schema file <drdl>` and
-cluster URI:
+Start :binary:`~bin.mongosqld` with the following options:
 
-.. note:: Do not specify a username and password in :option:`--mongo-uri`. The
-   connection string should only contain the list of servers.
+- :option:`--mongo-ssl <mongosqld --mongo-ssl>`
+- :option:`--auth <mongosqld --auth>`
+- :option:`--sslPEMKeyFile <mongosqld --sslPEMKeyFile>`
+- :option:`--mongo-uri <mongosqld --mongo-uri>`
+- :option:`--sslMode <mongosqld --sslMode>`
+- :option:`--mongo-username <mongosqld --mongo-username>`
+- :option:`--mongo-password <mongosqld --mongo-password>`
 
+If you named your key file ``test.pem`` as in the previous example, you
+can run the following, substituting your cluster URI and login
+credentials:
 
 .. code-block:: sh
 
    mongosqld --mongo-ssl \
              --auth \
              --sslPEMKeyFile test.pem \
-             --schema <schema.drdl> \
              --mongo-uri <uri> \
-             --sslMode allowSSL
+             --sslMode allowSSL \
+             --mongo-username <username> \
+             --mongo-password <password>
 
 Pass your username, password, and authentication database to your SQL
 client. For example, using ``mysql`` without verifying your :binary:`~bin.mongosqld`
 server certificate:
 
-
 .. code-block:: sh
 
    mysql --host <mongosqld-host> --port <mongosqld-port> -u <username>?source=admin -p --ssl-mode required --enable-cleartext-plugin