Update link to create-react-app deployment doc

Moved to https://facebook.github.io/create-react-app/docs/deployment

Author: jfhovinne

deployment/index.md

@@ -13,4 +13,4 @@ Documentation entries to deploy on various PaaS (Platform as a Service) are also
 The clients are [Create React App](https://github.com/facebook/create-react-app/) skeletons. You can deploy them in a wink
 on any static website hosting service (including [Netlify](https://www.netlify.com/), [Firebase Hosting](https://firebase.google.com/docs/hosting/),
 [GitHub Pages](https://pages.github.com/), or [Amazon S3](https://docs.aws.amazon.com/en_us/AmazonS3/latest/dev/WebsiteHosting.html)
-by following [the relevant documentation](https://github.com/facebook/create-react-app/blob/master/packages/react-scripts/template/README.md#deployment).
+by following [the relevant documentation](https://facebook.github.io/create-react-app/docs/deployment).