Update README.md

README.md

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 # go-admin-ui
 
 
-![build](https://github.com/wenjianzhang/go-admin-ui/workflows/build/badge.svg) ![MIT](https://img.shields.io/github/license/mashape/apistatus.svg)
+![build](https://github.com/wenjianzhang/go-admin-ui/workflows/build/badge.svg?branch=master) ![MIT](https://img.shields.io/github/license/mashape/apistatus.svg)
 
 ## 简介