Fix release badge

Author: garyb

README.md

@@ -1,6 +1,6 @@
 # purescript-argonaut-core
 
-[![Latest release](http://img.shields.io/bower/v/purescript-strongcheck.svg)](https://github.com/purescript-contrib/purescript-strongcheck/releases)
+[![Latest release](http://img.shields.io/bower/v/purescript-argonaut-core.svg)](https://github.com/purescript-contrib/purescript-argonaut-core/releases)
 [![Build Status](https://travis-ci.org/purescript-contrib/purescript-argonaut-core.svg?branch=master)](https://travis-ci.org/purescript-contrib/purescript-argonaut-core)
 [![Maintainer: slamdata](https://img.shields.io/badge/maintainer-slamdata-lightgrey.svg)](http://github.com/slamdata)