input: Write a function to reverse each string in a list.
  assert reverse_list(["Hello", "World"]) == ["olleH", "dlroW"]
  assert reverse_list(["Python", "is", "fun"]) == ["nohtyP", "si", "nuf"]
  assert reverse_list(["racecar", "level", "deified"]) == ["racecar", "level", "deified"]
output: def reverse_list(strings):
      return [s[::-1] for s in strings]