remove GUID

Author: Rick-Anderson

aspnetcore/security/app-secrets.md

@@ -80,7 +80,7 @@ dotnet user-secrets init
 
 The preceding command adds a `UserSecretsId` element within a `PropertyGroup` of the project file. By default, the inner text of `UserSecretsId` is a GUID. The inner text is arbitrary, but is unique to the project.
 
-[!code-xml[](~/security/app-secrets/samples/3.x/UserSecrets/UserSecrets.csproj?name=snippet_PropertyGroup&highlight=3)]
+![UserSecretsId](~/security/app-secrets/_static/UserSecretsId.png)
 
 ### Use Visual Studio