Fix sample (#18332)

JoshLove-msft · web-flow · commit dfabad36b648 · 2021-02-01T13:26:57.000-08:00
* Fix sample

* Fix
diff --git a/sdk/eventgrid/Azure.Messaging.EventGrid/samples/Sample3_ParseAndDeserializeEvents.md b/sdk/eventgrid/Azure.Messaging.EventGrid/samples/Sample3_ParseAndDeserializeEvents.md
@@ -52,8 +52,8 @@ foreach (CloudEvent cloudEvent in cloudEvents)
 }
 ```
 
-### Using `GetData()`
-If expecting mostly system events, it may be cleaner to switch on object `GetData()` and use pattern matching to deserialize events. In the case where there are unrecognized event types, one can use the returned `BinaryData` to deserialize the custom event data.
+### Using `AsSytemEventData()`
+If expecting mostly system events, it may be cleaner to switch on `AsSytemEventData()` and use pattern matching to act on the individual events. In the case where there are unrecognized event types, one can use the returned `BinaryData` to examine the event data.
 
 ```C# Snippet:DeserializePayloadUsingAsSystemEventData
 foreach (EventGridEvent egEvent in egEvents)

Original file line number	Diff line number	Diff line change
`@@ -52,8 +52,8 @@ foreach (CloudEvent cloudEvent in cloudEvents)`
`52`	`52`	`}`
`53`	`53`	```
`54`	`54`
`55`		-### Using `GetData()`
`56`		-If expecting mostly system events, it may be cleaner to switch on object `GetData()` and use pattern matching to deserialize events. In the case where there are unrecognized event types, one can use the returned `BinaryData` to deserialize the custom event data.
	`55`	+### Using `AsSytemEventData()`
	`56`	+If expecting mostly system events, it may be cleaner to switch on `AsSytemEventData()` and use pattern matching to act on the individual events. In the case where there are unrecognized event types, one can use the returned `BinaryData` to examine the event data.
`57`	`57`
`58`	`58`	```C# Snippet:DeserializePayloadUsingAsSystemEventData
`59`	`59`	`foreach (EventGridEvent egEvent in egEvents)`