fix(readme): npm downloads badge (#1849)

README.md

@@ -1,7 +1,7 @@
 [![Prism - API Mock Servers and Contract Testing](./examples/readme-header.svg)][mocking_landing_page]
 
 [![CircleCI][circle_ci_image]][circle_ci]
-[![NPM Downloads][circle_ci_image]][npm]
+[![NPM Downloads][npm_image]][npm]
 [![Buy us a tree][ecologi_image]][ecologi]
 
 Prism is a set of packages for API mocking and contract testing with **OpenAPI v2** (formerly known as Swagger) and **OpenAPI v3.x**.
@@ -135,4 +135,4 @@ Check these projects out!
 [npm]: https://www.npmjs.com/package/@stoplight/prism-cli
 [npm_image]: https://img.shields.io/npm/dw/@stoplight/prism-http?color=blue
 [ecologi]: https://ecologi.com/stoplightinc
-[ecologi_image]: https://img.shields.io/badge/Buy%20us%20a%20tree-%F0%9F%8C%B3-lightgreen
+[ecologi_image]: https://img.shields.io/badge/Buy%20us%20a%20tree-%F0%9F%8C%B3-lightgreen