docs(aws-lambda): fix Lambda addEventSource filter example (#23085)

----

fixes #23057 

### All Submissions:

* [x] Have you followed the guidelines in our [Contributing guide?](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md)

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: Lewis Richardson

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

@@ -648,7 +648,7 @@ const table = new dynamodb.Table(this, 'Table', {
 });
 fn.addEventSource(new eventsources.DynamoEventSource(table, {
   startingPosition: lambda.StartingPosition.LATEST,
-  filters: [{ eventName: lambda.FilterRule.isEqual('INSERT') }],
+  filters: [lambda.FilterCriteria.filter({ eventName: lambda.FilterRule.isEqual('INSERT') })],
 }));
 ```