Update Readme.md

Author: H-VK

Readme.md

@@ -1,7 +1,7 @@
 Node.js 微信公众号开发
 =====================
 ![git start](https://img.shields.io/github/stars/silencehvk/wechatbynode.svg?style=social&label=Star)
-![git fork](https://img.shields.io/github/fork/silencehvk/wechatbynode.svg?style=social&label=Fork)
+![git forks](https://img.shields.io/github/forks/silencehvk/wechatbynode.svg?style=social&label=Fork)
 ![node version](https://img.shields.io/badge/node-7.5.0-brightgreen.svg)
 ![npm version](https://img.shields.io/badge/npm-4.1.2-brightgreen.svg)
 ![express version](https://img.shields.io/badge/express-4.15.3-blue.svg)