Merge pull request #54 from kellenmace/feature/readme-updates

Correct a couple broken links in readme

Author: jasonbahl

README.md

@@ -75,8 +75,8 @@ The `authToken` that is received in response to the login mutation can then be s
 used in subsequent requests as an HTTP Authorization header to Authenticate the user prior to execution of the 
 GraphQL request. 
 
-- **Set authorization header in Apollo Client**: https://www.apollographql.com/docs/react/recipes/authentication.html#Header
-- **Set authorization header in Relay Modern**: https://facebook.github.io/relay/docs/guides-network-layer.html#default-network-layer
+- **Set authorization header in Apollo Client**: https://www.apollographql.com/docs/react/networking/authentication/#header
+- **Set authorization header in Relay Modern**: https://relay.dev/docs/en/network-layer.html
 - **Set authorization header in Axios**: https://github.com/axios/axios#axioscreateconfig
 
 ## Example using GraphiQL