docs: add S3 as a supported model

Author: heitorlessa

docs/content/utilities/parser.mdx

@@ -158,6 +158,7 @@ Model name | Description
 **SqsModel** | Lambda Event Source payload for Amazon SQS
 **AlbModel** | Lambda Event Source payload for Amazon Application Load Balancer
 **CloudwatchLogsModel** | Lambda Event Source payload for Amazon CloudWatch Logs
+**S3Model** | Lambda Event Source payload for Amazon S3
 
 You can extend them to include your own models, and yet have all other known fields parsed along the way.