array_where() example closure has arguments reversed

[bcwaretx]

docs/services/helpers#method-array-where

array_where wraps Laravel Arr::where()
https://laravel.com/docs/5.5/helpers#method-array-where
which in turn wraps array_filter()

Documented arguments for the closure are function ($value, $key). Current documentation lists function ($key, $value).

[daftspunk]

Thanks @bcwaretx !