valid_docs triggers a warning on tuples

[kevindelord]

Hi,

A warning is shown by the valid_docs rule when a function returns a tuple.
For example:

    /**
    Awesome test function

    - returns: super tuple
    */
    func tupleAsReturnValue() -> (r: CGFloat, g: CGFloat, b: CGFloat) {
        return (r: 1, g: 2, b: 3)
    }

There is no warning when the tuple is a parameter.

Thanks a lot for your work !
Regards

[jpsim]

Thanks for reporting! We should certainly fix this. Help appreciated! 😄