docs: fix build status badge

Author: hudovisk

README.md

@@ -1,6 +1,6 @@
 # react-optimize
 
-[![Build Status](https://github.com/hudovisk/react-optimize/workflows/main.yml/badge.svg)](https://github.com/hudovisk/react-optimize/actions) [![Greenkeeper badge](https://badges.greenkeeper.io/hudovisk/react-optimize.svg)](https://greenkeeper.io/)
+[![Build Status](https://github.com/hudovisk/react-optimize/workflows/Build/badge.svg)](https://github.com/hudovisk/react-optimize/actions) [![Greenkeeper badge](https://badges.greenkeeper.io/hudovisk/react-optimize.svg)](https://greenkeeper.io/)
 
 Integration with Google Optimize.