== should format multi-line strings ==
strings = [
  """
  This is
  a
  multi-line
  string
  """,
            '''This is
    a multi-line literal string


        ''',
]

[expect]
strings = [
  """
  This is
  a
  multi-line
  string
  """,
  '''This is
    a multi-line literal string


        ''',
]