input: Write a python function to sort a list of numbers in descending order using the built-in sorted() function.
  assert sort_descending([1, 2, 3, 4, 5])==[5, 4, 3, 2, 1]
  assert sort_descending([10, 5, 8, 3, 2])==[10, 8, 5, 3, 2]
  assert sort_descending([7, 7, 7, 1, 2])==[7, 7, 7, 2, 1]
output: def sort_descending(numbers):
      return sorted(numbers, reverse=True)