hook.cs

using System;
using System.IO;
using System.Text;

internal class StartupHook
{
    public static void Initialize()
    {
        Console.SetOut(new FixCasingTextWriter(Console.Out));
    }

    class FixCasingTextWriter : TextWriter
    {
        private readonly TextWriter _writer;

        public FixCasingTextWriter(TextWriter writer)
        {
            _writer = writer;
        }

        public override Encoding Encoding => _writer.Encoding;

        public override void Write(string value)
        {
            int index = 0;
            int lastIndex = 0;

            while (index < value.Length)
            {
                index = value.IndexOf(".NET", lastIndex);

                if (index == -1) break;

                _writer.Write(value.Substring(lastIndex, index - lastIndex));
                _writer.Write(".NeT");

                lastIndex = index + 4;
            }

            if (lastIndex < value.Length)
            {
                _writer.Write(value.Substring(lastIndex));
            }
        }
    }
}