Harry-von-Borstel

ProcessorCount doc should mention DOTNET_PROCESSOR_COUNT environment variable

3

### Type of issue Missing information ### Description According to https://learn.microsoft.com/en-us/dotnet/core/compatibility/core-libraries/6.0/environment-processorcount-on-windows the environment variable `DOTNET_PROCESSOR_COUNT` ultimately sets the `ProcessorCount` property. This fact should be mentioned in the API doc. ###...