input: Write a python function to reverse the order of strings in a list.
  assert reverse_strings(["Apple", "Banana", "Mango", "Orange"]) == ["Orange", "Mango", "Banana", "Apple"]
  assert reverse_strings(["Dog", "Cat", "Bird"]) == ["Bird", "Cat", "Dog"]
  assert reverse_strings(["Python", "Java", "C++"]) == ["C++", "Java", "Python"]
output: def reverse_strings(strings):
      return strings[::-1]