I have an api gateway that is pointed to s3 and it reads the document and sends back the contents, about 5 paragraphs. It works great, however the content-type on the response is binary\octet-stream. For app integration it would be better if this was text\plain as it is just plain text. I have tried to set this as a parameter on the request with response-content-type. I have also tried to map it within the api gateway integration response. If I leave off the Content-Type mapping I get application/json instead. I've followed the docs here: https://docs.aws.amazon.com/apigateway/latest/developerguide/integrating-api-with-aws-services-s3.html
