message: Fix typos from linting
  Caused by
  Fixes
diff: @@ -1266,7 +1266,7 @@ class BQEngineSpec(BaseEngineSpec):
  def convert_dttm(cls, target_type, dttm):
  tt = target_type.upper()
  if tt == 'DATE':
  - return "{}'".format(dttm.strftime('%Y-%m-%d'))
  + return "'{}'".format(dttm.strftime('%Y-%m-%d'))
  return "'{}'".format(dttm.strftime('%Y-%m-%d %H:%M:%S'))
  @classmethod
  @@ -1297,7 +1297,7 @@ class ImpalaEngineSpec(BaseEngineSpec):
  def convert_dttm(cls, target_type, dttm):
  tt = target_type.upper()
  if tt == 'DATE':
  - return "{}'".format(dttm.strftime('%Y-%m-%d'))
  + return "'{}'".format(dttm.strftime('%Y-%m-%d'))
  return "'{}'".format(dttm.strftime('%Y-%m-%d %H:%M:%S'))
  @classmethod
  