update srcconnect docs (#674)

ref CLO-772

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Author: michaellzc

docs/cloud/private_connectivity_sourcegraph_connect.mdx

@@ -32,6 +32,8 @@ Tunnel client: forward proxy clients managed by sourcegraph. Every client has it
 Customer should reach out to their account manager to initiate the process. The account manager will work with the customer to collect the required information and initiate the process, including but not limited to:
 
 - The DNS name of the private code host, e.g. `gitlab.internal.company.net` or private artifact registry, e.g. `artifactory.internal.company.net`.
+- The port of the private code host, e.g., `443`, `80`, `22`.
+- The type of the TLS certificate used by the private resource, one of self-signed by internal private CA, or issued by a public CA.
 
 Finally, Sourcegraph will provide the following: