input: Write a function to sort a list of colors in alphabetical order.
  assert sort_colors(["red", "green", "blue"]) == ["blue", "green", "red"]
  assert sort_colors(["cyan", "magenta", "yellow", "black"]) == ["black", "cyan", "magenta", "yellow"]
  assert sort_colors(["orange", "purple", "white"]) == ["orange", "purple", "white"]
output: def sort_colors(colors):
      return sorted(colors)