Update README.md

Author: Agash

README.md

@@ -1,6 +1,6 @@
 # ObsWebSocket.Core: Your Modern C# Bridge to OBS! 🚀🎬✨
 
-[![Build Status](https://img.shields.io/github/actions/workflow/status/Agash/ObsWebSocket/build.yml?branch=main&style=flat-square&logo=github&logoColor=white)](https://github.com/Agash/ObsWebSocket/actions)
+[![Build Status](https://img.shields.io/github/actions/workflow/status/Agash/ObsWebSocket/build.yml?branch=master&style=flat-square&logo=github&logoColor=white)](https://github.com/Agash/ObsWebSocket/actions)
 [![NuGet Version](https://img.shields.io/nuget/v/ObsWebSocket.Core.svg?style=flat-square&logo=nuget&logoColor=white)](https://www.nuget.org/packages/ObsWebSocket.Core/)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg?style=flat-square)](https://opensource.org/licenses/MIT)