DOCSP-37144: Server monitoring mode (#362)

(cherry picked from commit 5edffd1)

Author: norareidy

source/fundamentals/connection/connection-options.txt

@@ -363,6 +363,17 @@ relevant options.
        | **Default**: ``null``
        | **Connection URI Example**: {+not-available+}
 
+   * - **ServerMonitoringMode**
+     - | Specifies the server monitoring protocol to use. When
+       | this option is set to ``Auto``, the monitoring mode is determined
+       | by the environment in which the driver is running. The driver
+       | uses polling mode in function-as-a-service (FaaS) environments,
+       | such as AWS Lambda, and the streaming mode in other environments.
+       | 
+       | **Data Type**: `ServerMonitoringMode <{+new-api-root+}/MongoDB.Driver/MongoDB.Driver.Core.Servers.ServerMonitoringMode.html>`__
+       | **Default**: ``Auto``
+       | **Connection URI Example**: ``serverMonitoringMode=poll``
+
    * - **Servers**
      - | The cluster members where MongoDB is running.
        |