DOCSP-34012: Further detail default TLS/SSL behavior when using DNS seedlist (#889)

DOCSP-34012: Further detail default TLS/SSL behavior when using DNS seedlist
(cherry picked from commit 9627bfe)

Author: mcmorisi

source/fundamentals/connection/tls.txt

@@ -63,7 +63,12 @@ in the following ways:
 
    If you use a DNS SRV record when connecting to MongoDB by specifying
    the ``+srv`` modification in your connection string, you enable
-   TLS on your connection by default.
+   TLS on your connection by default. To disable it, set the ``tls`` or ``ssl`` parameter
+   value to ``false`` in your connection string or ``MongoClientOptions`` object.
+   
+   To learn more about connection behavior when you use a DNS seedlist,
+   see the :manual:`SRV Connection Format </reference/connection-string/#srv-connection-format>`
+   section in the Server manual.
 
 In addition to the ``tls`` client option, the driver provides additional
 options to configure TLS on your connection. For **testing purposes**,