OCPBUGS-48479: Adding MHC excption to the Pausing MHC cluster update step

Author: obrown1205

modules/machine-health-checks-pausing.adoc

@@ -8,7 +8,12 @@
 [id="machine-health-checks-pausing_{context}"]
 = Pausing a MachineHealthCheck resource
 
-During the update process, nodes in the cluster might become temporarily unavailable. In the case of worker nodes, the machine health check might identify such nodes as unhealthy and reboot them. To avoid rebooting such nodes, pause all the `MachineHealthCheck` resources before updating the cluster.
+During the update process, nodes in the cluster might become temporarily unavailable. In the case of worker nodes, the `MachineHealthCheck` resources might identify such nodes as unhealthy and reboot them. To avoid rebooting such nodes, pause all the `MachineHealthCheck` resources before updating the cluster.
+
+[NOTE]
+====
+Some `MachineHealthCheck` resources might not need to be paused. If your `MachineHealthCheck` resource relies on unrecoverable conditions, pausing that MHC is unnecessary.
+====
 
 .Prerequisites