Added Pascal case "with spaces"

[wa1]

In a project I work on we have unit test method names in PascalSnakeCase but the display names in what can be described as spaced Pascal case.

Example:

[Fact(DisplayName="Invalid Input Should Throw")]
Invalid_Input_Should_Throw
...

Out of laziness I wanted to take Invalid_Input_Should_Throw and convert that to Invalid Input Should Throw