Update troubleshooting guidance

Author: jordan-smith721

source/connection-troubleshooting.txt

@@ -269,8 +269,9 @@ Monitor Thread Exception
 
    INFO: Exception in monitor thread while connecting to server ssc-cluster-01-shard-00-02.9cbnp.mongodb.net:27017
 
-To resolve this error, you must install certificates as described under
-:ref:`Security Certificate Errors <java-connection-certificate>`.
+This log line indicates that the monitoring thread that continuously
+checks the status of each replica set node failed to contact one of the nodes.
+This is an expected message during server maintenance operations and can be safely ignored.
 
 Certificate Request Exception
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~