Fix for issues with Authentication

HttpOptions do not pass auth info to the server. You should probably mention that Anonymous Authentication needs to be enabled in order for this to work. Also if you need to use Windows Authentication as well, make sure to add the [Authorize] attribute tags to the necessary methods.

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#### Document Details

⚠ *Do not edit this section. It is required for docs.microsoft.com ➟ GitHub issue linking.*

* ID: 59bca5db-1196-2a8b-a0d8-4e89b2382288
* Version Independent ID: d3f332c4-4c60-039e-0e1e-bc6b11831f87
* Content: [Enable Cross-Origin Requests (CORS) in ASP.NET Core](https://docs.microsoft.com/en-us/aspnet/core/security/cors?view=aspnetcore-3.1#feedback)
* Content Source: [aspnetcore/security/cors.md](https://github.com/dotnet/AspNetCore.Docs/blob/master/aspnetcore/security/cors.md)
* Product: **aspnet-core**
* Technology: **aspnetcore-security**
* GitHub Login: @Rick-Anderson
* Microsoft Alias: **riande**