docs: 更新README

README.md

@@ -45,7 +45,7 @@ make all
 | [Official YOLOv7](https://github.com/WongKinYiu/yolov7)                                                                                          | [./core/detectors/yolov7.py](./core/detectors/yolov7.py)                                 |
 | [PaddleYOLO YOLOv7P6-E6](https://github.com/PaddlePaddle/PaddleYOLO/tree/develop/configs/yolov7#p6%E5%A4%A7%E5%B0%BA%E5%BA%A6%E6%A8%A1%E5%9E%8B) | [./core/detectors/paddle_yolo/\_\_init\_\_.py](./core/detectors/paddle_yolo/__init__.py) |
 
-如果更新了模型权重，请同时修改镜像中的下载地址，如：
+如果更新了模型权重，请同时修改创建镜像时的下载地址，如：
 
 ```bash
 $ cat Dockerfile