Update README.md

Author: tmbo

README.md

@@ -2,7 +2,7 @@
 [![Join the forum at https://forum.rasa.com](https://img.shields.io/badge/forum-join%20discussions-brightgreen.svg)](https://forum.rasa.com/?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Build Status](https://travis-ci.com/RasaHQ/rasa_nlu.svg?branch=master)](https://travis-ci.com/RasaHQ/rasa_nlu)
 [![Coverage Status](https://coveralls.io/repos/github/RasaHQ/rasa_nlu/badge.svg?branch=master)](https://coveralls.io/github/RasaHQ/rasa_nlu?branch=master)
-[![PyPI version](https://badge.fury.io/py/rasa_nlu.svg)](https://badge.fury.io/py/rasa_nlu)
+[![PyPI version](https://badge.fury.io/py/rasa-nlu.svg)](https://badge.fury.io/py/rasa-nlu)
 [![Documentation Status](https://img.shields.io/badge/docs-stable-brightgreen.svg)](https://nlu.rasa.com/)
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2FRasaHQ%2Frasa_nlu.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2FRasaHQ%2Frasa_nlu?ref=badge_shield)