Fix hardcoded new line characters for Windows only.

src/automotiveMastermind/Task2/Converter.Tests/NumeralsConverter_ToRomanShould.cs

@@ -75,7 +75,7 @@ public void Throw_Exception_Given_Values_Is_Out_Of_Range(int value)
     {
       Exception ex = Assert.Throws<ArgumentOutOfRangeException>(() => NumeralsConverter.ToRoman(value));
 
-      Assert.Equal($"The value '{value}' must be between 1 and 1000.\r\nParameter name: number", ex.Message);
+      Assert.Equal($"The value '{value}' must be between 1 and 1000.{Environment.NewLine}Parameter name: number", ex.Message);
     }
 
     #endregion