Too Windows-centric for .NET Core

If .NET Core is truly multi-OS platform, you need to get the documentation for .NET Core to sound the same. There is no concept for a "Drive Letter" for Mac and Linux, so the 'driveName' parameter description makes no sense.

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#### Document Details

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* ID: eda8d6b1-bcf1-0421-d4ee-67c5ddfe4610
* Version Independent ID: a7c2c5f8-6311-62fb-620f-0a648ce81c1f
* Content: [DriveInfo(String) Constructor (System.IO)](https://docs.microsoft.com/en-us/dotnet/api/system.io.driveinfo.-ctor?view=netcore-2.2)
* Content Source: [xml/System.IO/DriveInfo.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System.IO/DriveInfo.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**