Correcting parameter and return types for static methods of QInputDialog

Hi,

i noticed that the parameter and return values in the PySide2-Documentation of QInputDialog for the static methods (getText, getDouble, ...) does not match the actual implementation. The 'ok' value is a return value instead of a parameter as the C++-way of implementation would not work in Python. The documentation should be changed to reflect this difference to avoid confusion.

Thanks