Update README.md

Author: jmprieur

README.md

@@ -9,7 +9,7 @@ endpoint: AAD v2.0
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 # Calling an ASP.NET Core Web API from a WPF application using Azure AD V2
 
-![Build status](https://identitydivision.visualstudio.com/IDDP/_apis/build/status/AAD Samples/.NET client samples/active-directory-dotnet-native-aspnetcore-v2?branchName=master)
+![Build badge](https://identitydivision.visualstudio.com/IDDP/_apis/build/status/AAD Samples/.NET client amples/active-directory-dotnet-native-aspnetcore-v2)
 
 ## About this sample