Update README.md

Author: kunyuan

README.md

@@ -1,6 +1,6 @@
 # ElectronGas
 
-![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://numericalEFT.github.io/ElectronGas.jl/stable)
-![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://numericalEFT.github.io/ElectronGas.jl/dev)
-![Build Status](https://github.com/numericalEFT/ElectronGas.jl/actions/workflows/CI.yml/badge.svg?branch=master)
+[![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://numericalEFT.github.io/ElectronGas.jl/stable)]
+[![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://numericalEFT.github.io/ElectronGas.jl/dev)]
+[![Build Status](https://github.com/numericalEFT/ElectronGas.jl/actions/workflows/CI.yml/badge.svg?branch=master)](https://github.com/numericalEFT/ElectronGas.jl/actions/workflows/CI.yml?query=branch%3Amaster)
 [![codecov](https://codecov.io/gh/numericalEFT/ElectronGas.jl/branch/master/graph/badge.svg?token=9F4KD8O8W2)](https://codecov.io/gh/numericalEFT/ElectronGas.jl)