fix: fix ci error: no module found of ppstruture

magic_pdf/model/sub_modules/ocr/paddleocr/ppocr_273_mod.py

@@ -5,6 +5,7 @@ import cv2
 import numpy as np
 import torch
 
+
 from paddleocr import PaddleOCR
 from ppocr.utils.logging import get_logger
 from ppocr.utils.utility import alpha_to_color, binarize_img