System.IO.StreamWriter Constructor with BufferSize Argument

The documentation for `public StreamWriter (System.IO.Stream stream, System.Text.Encoding encoding, int bufferSize)` states that an `ArgumentOutOfRangeException` will be thrown if _`bufferSize` is negative_. That statement is incorrect as it implies that a value of zero will not throw an exception. The corresponding documentation for `public StreamReader (System.IO.Stream stream, System.Text.Encoding encoding, bool detectEncodingFromByteOrderMarks, int bufferSize)` is correct as it states that an `ArgumentOutOfRangeException` will be thrown if _`bufferSize` is less than or equal to zero._

[public StreamWriter (System.IO.Stream stream, System.Text.Encoding encoding, int bufferSize)](https://docs.microsoft.com/en-us/dotnet/api/system.io.streamwriter.-ctor?view=netframework-4.8#System_IO_StreamWriter__ctor_System_IO_Stream_System_Text_Encoding_System_Int32_)

Open the linked StreamWriter constructor documentation and compare its bufferSize exception wording with the corresponding StreamReader constructor documentation. Confirm that the documented condition matches the API behavior and that the rendered page clearly states the zero-value case; the issue is done when the incorrect wording is corrected.

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