Added v1 vs v2 note

Author: everyplace

Examples/APIGatewayV1/README.md

@@ -2,6 +2,9 @@
 
 This is a simple example of an AWS Lambda function invoked through an Amazon API Gateway V1.
 
+> [!NOTE]
+> This example uses the API Gateway V1 `Api` endpoint type, whereas the [API Gateway V2](https://github.com/swift-server/swift-aws-lambda-runtime/tree/main/Examples/APIGateway) example uses the `HttpApi` endpoint type. For more information, see [Choose between REST AIs and HTTP APIs](https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-vs-rest.html).
+
 ## Code 
 
 The Lambda function takes all HTTP headers it receives as input and returns them as output.