Update workflow badges (actions#377)

Author: IvanZosimov

Diff for: README.md

@@ -1,6 +1,7 @@
 # setup-dotnet
 
-[![GitHub Actions Status](https://github.com/actions/setup-dotnet/workflows/Main%20workflow/badge.svg)](https://github.com/actions/setup-dotnet)
+[![Basic validation](https://github.com/actions/setup-dotnet/actions/workflows/basic-validation.yml/badge.svg?branch=main)](https://github.com/actions/setup-dotnet/actions/workflows/basic-validation.yml)
+[![e2e tests](https://github.com/actions/setup-dotnet/actions/workflows/e2e-tests.yml/badge.svg?branch=main)](https://github.com/actions/setup-dotnet/actions/workflows/e2e-tests.yml)
 
 This action sets up a [.NET CLI](https://github.com/dotnet/sdk) environment for use in actions by: