chore(lambda-destinations): fix typo in docs (#13305)

Fix minor typo in lambda-destination docs.

cc @nija-at 

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packages/@aws-cdk/aws-lambda-destinations/README.md

@@ -21,7 +21,7 @@ The following destinations are supported
 * SNS topic
 * EventBridge event bus
 
-Example with a SNS topic for sucessful invocations:
+Example with a SNS topic for successful invocations:
 
 ```ts
 import * as lambda from '@aws-cdk/aws-lambda';