input: Write a function that takes a list of integers and sorts the list items in descending order. Return the sorted list.
  assert sort_list_descending([3, 7, 5, 8, 10])==[10, 8, 7, 5, 3]
  assert sort_list_descending([1, 2, 3, 4, 5])==[5, 4, 3, 2, 1]
  assert sort_list_descending([10, 5, 20, 15])==[20, 15, 10, 5]
  assert sort_list_descending([])==[]
  assert sort_list_descending([1])==[1]
output: def sort_list_descending(lst):
      return sorted(lst, reverse=True)