Fix broken link

Author: antograssiot

core/getting-started.md

@@ -203,4 +203,4 @@ Run the Symfony app (`bin/console server:run`) and browse the API entrypoint at
 
 Interact with the API using a REST client (we recommend [Postman](https://www.getpostman.com/)) or an Hydra aware application
 (you should give [Hydra Console](https://github.com/lanthaler/HydraConsole) a try). Take
-a look at the usage examples in [the `features` directory](https://github.com/api-platform/api-platform/tree/master/features).
+a look at the usage examples in [the `features` directory](https://github.com/api-platform/core/tree/master/features).