Updated build badge

follow https://github.community/t/github-actions-badge-not-found/16301/11

README.md

@@ -1,6 +1,6 @@
 # Cyclic Boosting Machines
 
-![Build](https://github.com/Microsoft/cbm/actions/workflows/build.yml/badge.svg)
+![Build](https://github.com/Microsoft/cbm/workflows/Build/badge.svg)
 ![Python](https://img.shields.io/pypi/pyversions/cyclicbm.svg)
 [![codecov](https://codecov.io/gh/microsoft/CBM/branch/main/graph/badge.svg?token=VRppFx2o8v)](https://codecov.io/gh/microsoft/CBM)
 [![PyPI version](https://badge.fury.io/py/cyclicbm.svg)](https://badge.fury.io/py/cyclicbm)