DOCSP-40830 Include load balanced mode note (#564)

* add note and update links

* update for clarity

* update link title

* add space to link

(cherry picked from commit e36cbd8)

Author: stephmarie17

source/fundamentals/monitoring.txt

@@ -162,7 +162,7 @@ The driver defines nine SDAM events. The driver divides these nine events
 between three separate listener interfaces which each listen for three of the
 nine events. Here are the three interfaces and the events they listen for:
 
-- ``ClusterListener``: :spec:`topology </server-discovery-and-monitoring/server-discovery-and-monitoring.rst#topology>`
+- ``ClusterListener``: :spec:`topology </server-discovery-and-monitoring/server-discovery-and-monitoring.md#topology>`
   related events
 - ``ServerListener``: events related to ``mongod`` or ``mongos`` processes
 - ``ServerMonitorListener``: heartbeat related events
@@ -172,7 +172,11 @@ implements one of the three preceding interfaces and register an instance of tha
 class with your ``MongoClient`` instance.
 
 For a detailed description of each SDAM event in the driver, see the
-:spec:`MongoDB SDAM Logging and Monitoring Specification </server-discovery-and-monitoring/server-discovery-and-monitoring-logging-and-monitoring.rst#events-api>`.
+:spec:`MongoDB SDAM Logging and Monitoring Specification </server-discovery-and-monitoring/server-discovery-and-monitoring-logging-and-monitoring.md#events-api>`.
+
+.. note:: Load Balanced Mode
+
+   The driver doesn't emit heartbeat related events when in load balanced mode. For more details about SDAM events with load balancing, see :spec:`MongoDB Load Balancer Support Specification </load-balancers/load-balancers.md#server-discovery-logging-and-monitoring>`.
 
 Example
 ^^^^^^^