correct missing reference for contributing section

Author: Vitor Capretz

README.md

@@ -51,6 +51,10 @@ The React Native documentation only discusses the components, APIs, and topics s
 
 See the CONTRIBUTING file for how to help out.
 
+## Contributing
+
+More information about how to contribute can be found [here](./CONTRIBUTING.md)
+
 ## License
 
 React Native is MIT licensed, as found in the LICENSE file.