Merge pull request #23 from HoraceShmorace/HoraceShmorace-patch-2

Update README.md

README.md

@@ -14,7 +14,7 @@ Resized images will be converted to [AVIF](https://caniuse.com/avif) format if t
 The original inspiration for this application came from [this AWS blog post](https://aws.amazon.com/blogs/networking-and-content-delivery/resizing-images-with-amazon-cloudfront-lambdaedge-aws-cdn-blog/) I read a few years back. The article intended to provide a [semi-]working example, which was far from being suitable for a production environment.
 
 ## IMPORTANT!
-While Image-Flex does technically support setting a region to use other than `us-east-1`, CloudFront requires `us-east-1`. This is an AWS limitation, and as another one limits all resources in a CloudFormation stack to the same region, the only usable region is `us-east-1`.
+While Image-Flex does technically support setting a region to use other than `us-east-1`, AWS WAF working with CloudFront requires `us-east-1`. This is an AWS limitation, and as another one limits all resources in a CloudFormation stack to the same region, the only usable region is `us-east-1`.
 
 ## Prerequisites
 Note that this is a production-ready application, not a tutorial. This document assumes you have some working knowledge of AWS, [CloudFormation](https://aws.amazon.com/cloudformation/) and the [Serverless Application Model (SAM)](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/what-is-sam.html), [AWS Lambda](https://aws.amazon.com/lambda/), [S3](https://aws.amazon.com/s3/), [Node.js](https://nodejs.org/), [NPM](https://www.npmjs.com/), and JavaScript.