Update README.md

README.md

@@ -1,7 +1,7 @@
 # All stations in Belgium
 [![Build Status](https://travis-ci.org/iRail/stations.svg)](https://travis-ci.org/iRail/stations)
 [![Dependency Status](https://david-dm.org/iRail/stations.svg)](https://david-dm.org/iRail/stations.svg)
-[![Software License](https://img.shields.io/badge/license-CC0-brightgreen.svg?style=flat)](LICENSE)
+[![Software License](https://img.shields.io/badge/license-CC0-brightgreen.svg?style=flat)](https://creativecommons.org/publicdomain/zero/1.0/)
 
 We try to maintain a list of all the stations in Belgium using CSV so everyone can help to maintain it on github. Furthermore, we have a PHP composer/packagist library for you to go from station name to ID and vice versa and we convert the CSV file to JSON-LD for maximum semantic interoperability.