code: def update_credit_note_item(self, credit_note_item_id, credit_note_item_dict):
          
          return self._create_put_request(
              resource=CREDIT_NOTE_ITEMS,
              billomat_id=credit_note_item_id,
              send_data=credit_note_item_dict
          )
docs: Updates a credit note item
  
          :param credit_note_item_id: the credit note item id
          :param credit_note_item_dict: dict
          :return: dict