Merge pull request #176941 from spelluru/patch-60

clarification

Author: ShannonLeavitt

articles/service-bus-messaging/includes/event-grid-service-bus.md

@@ -19,7 +19,7 @@ Service Bus emits the following event types:
 | Microsoft.ServiceBus.ActiveMessagesAvailableWithNoListeners | Raised when there are active messages in a Queue or Subscription and no receivers listening. |
 | Microsoft.ServiceBus.DeadletterMessagesAvailableWithNoListeners | Raised when there are active messages in a Dead Letter Queue and no active listeners. |
 | Microsoft.ServiceBus.ActiveMessagesAvailablePeriodicNotifications | Raised every 30 seconds if there are active messages in a queue or subscription, even if there are active listeners on that specific queue or subscription. It's also raised when the active message count transitions from 0 to a positive value for the queue or subscription. |
-| Microsoft.ServiceBus.DeadletterMessagesAvailablePeriodicNotifications | Raised periodically if there are messages in the dead-letter entity of a Queue or Subscription, even if there are active listeners on the dead-letter entity of that specific Queue or Subscription. | 
+| Microsoft.ServiceBus.DeadletterMessagesAvailablePeriodicNotifications | Raised every 30 seconds if there are messages in the dead-letter entity of a queue or subscription, even if there are active listeners on the dead-letter entity of that specific queue or subscription. It's also raised when the dead-letter message count transitions from 0 to a positive value for the dead-letter entity of the queue or subscription. | 
 
 ## Example event