Fixed a docblock

https://github.com/thephpleague/fractal/blob/c241e8024ec7c7ff11e60c73183f45f1f99420c0/src/Pagination/ZendFrameworkPaginatorAdapter.php#L38
https://github.com/thephpleague/fractal/blob/c241e8024ec7c7ff11e60c73183f45f1f99420c0/src/Pagination/PagerfantaPaginatorAdapter.php#L38