Update README.md (#7765)

fix readme to use correct apollo server path

Author: daskabe

orm/nextjs-graphql/README.md

@@ -124,7 +124,7 @@ The app is now running, navigate to [`http://localhost:3000/`](http://localhost:
 
 ## Using the GraphQL API
 
-You can also access the GraphQL API of the API server directly. It is running on the same host machine and port and can be accessed via the `/api` route (in this case that is [`localhost:3000/api`](http://localhost:3000/api)).
+You can also access the GraphQL API of the API server directly. It is running on the same host machine and port and can be accessed via the `/api/graphql` route (in this case that is [`localhost:3000/api/graphql`](http://localhost:3000/api)).
 
 Below are a number of operations that you can send to the API.