slight inaccuracy in findn docstring

[Benoit9]

julia/base/array.jl

Line 1810 in ebc2493

If there are no non-zero elements of `A`, return a 2-tuple of empty arrays.

Instead of :

If there are no non-zero elements of A, return a 2-tuple of empty arrays.

It should read:

If there are no non-zero elements of A, return a tuple of empty arrays.

[fredrikekre]

But it does return a 2-tuple of empty arrays?

[Benoit9]

It returns an n-tuple where n is the number of dimensions of the array.