Update scheduled-events.md

https://github.com/MicrosoftDocs/azure-docs/issues/55231

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cc: @mimckitt

Author: mimckitt

articles/virtual-machines/linux/scheduled-events.md

@@ -48,7 +48,7 @@ Scheduled events are delivered to:
 
 - Standalone Virtual Machines.
 - All the VMs in a cloud service.
-- All the VMs in an availability set.
+- All the VMs in an availability set/ availability zone. 
 - All the VMs in a scale set placement group. 
 
 As a result, check the `Resources` field in the event to identify which VMs are affected.