fix: joy_name indexes correctly referenced

[Varedis]

Fixes the automatic detection of controllers

find returns the index of where the string was found in the word. Controllers were always defaulting to XBox if the match was at index 0. An example is the PS4 Controller it was matching at index 0 on the joy_name.find("PS") criteria, so it was being classed as falsy and then falling through to the else.

Example

PS4 Controller before fix:

PS4 Controller after fix:

[Varedis]

@Pennycook I hope you don't mind me fixing this issue I found

[Pennycook]

Thank you for finding this. I don't have a PlayStation or Nintendo controller that work with my machine, and so I wasn't able to test the behavior here.