Update README.md

Author: jmprieur

README.md

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 [![.NET](https://github.com/Azure-Samples/active-directory-aspnetcore-webapp-openidconnect-v2/actions/workflows/dotnet.yml/badge.svg)](https://github.com/Azure-Samples/active-directory-aspnetcore-webapp-openidconnect-v2/actions/workflows/dotnet.yml)
 
-[![Build status](https://identitydivision.visualstudio.com/IDDP/_apis/build/status/AAD%20Samples/.NET%20client%20samples/ASP.NET%20Core%20Web%20App%20tutorial)](https://identitydivision.visualstudio.com/IDDP/_build/latest?definitionId=819)
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 ## About this tutorial
 
 ### Scope of this tutorial