Documentation about Options of OpenApiReference is missing

The global tool generates section of `` in the .csproj files, missing is a section about all the options of how OpenApiReference is configured.

Seems like options like `ClassName` and `Namespace` work but it is unclear which options exists in general

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

* ID: 653e14ef-227e-a165-0360-2f59259e16c6
* Version Independent ID: e4685d05-e874-76a3-9780-66b864eca6c1
* Content: [.NET OpenAPI tool command reference and installation](https://learn.microsoft.com/en-us/aspnet/core/web-api/microsoft.dotnet-openapi?view=aspnetcore-7.0)
* Content Source: [aspnetcore/web-api/Microsoft.dotnet-openapi.md](https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/web-api/Microsoft.dotnet-openapi.md)
* Product: **aspnet-core**
* Technology: **aspnetcore-webapi**
* GitHub Login: @ryanbrandenburg
* Microsoft Alias: **rybrande**