chore: Correct new package name for the npm badge

Author: TimothyJones

README.md

@@ -2,7 +2,7 @@
 
 ![Build and test](https://github.com/pact-foundation/pact-js-core/workflows/Build%20and%20test/badge.svg)
 [![Known Vulnerabilities](https://snyk.io/test/github/pact-foundation/pact-js-core/badge.svg?targetFile=package.json)](https://snyk.io/test/github/pact-foundation/pact-js-core?targetFile=package.json)
-[![npm](https://img.shields.io/npm/v/@pact-foundation/pact-js-core.svg)](https://www.npmjs.com/package/@pact-foundation/pact-core)
+[![npm](https://img.shields.io/npm/v/@pact-foundation/pact-core.svg)](https://www.npmjs.com/package/@pact-foundation/pact-core)
 [![license](https://img.shields.io/github/license/pact-foundation/pact-js-core.svg)](https://github.com/pact-foundation/pact-js-core/blob/master/LICENSE)
 [![dependencies](https://img.shields.io/david/pact-foundation/pact-js-core.svg)](https://www.npmjs.com/package/@pact-foundation/pact-core)
 [![slack](http://slack.pact.io/badge.svg)](http://slack.pact.io)