(DOCSP-46068): Tweaked HA monitoring wording.

Author: corryroot

source/tutorial/configure-application-high-availability.txt

@@ -187,7 +187,7 @@ Upgrade Mode
 
 If you have an |onprem| installation with more than one |onprem| host
 pointing to the same Application Database, you can upgrade |onprem| to
-a newer version without incurring monitoring downtime. After you
+a newer version with only a brief monitoring downtime. After you
 complete the upgrade of one |onprem| host of a highly available
 |onprem| deployment, that deployment enters a state known as **Upgrade
 Mode**. In this state, |onprem| is available during an upgrade. The