input: Write a function that takes a list of strings and returns a new list where each string is reversed.
  assert reverse_list_of_strings(['Red', 'Green', 'Blue', 'White', 'Black'])==['deR', 'neerG', 'eulB', 'etihW', 'kcalB']
  assert reverse_list_of_strings(['john','amal','joel','george'])==['nhoj','lama','leoj','egroeg']
  assert reverse_list_of_strings(['jack','john','mary'])==['kcaj','nhoj','yram']
output: def reverse_list_of_strings(lst):
      return [s[::-1] for s in lst]