Update README_zh.md

huggingface-cli download Tencent-Hunyuan/TensorRT-engine ${REMOTE_PATH} ./ckpts/t2i/model_trt/engine/ 缺少 --local-dir 命令参数 会下载到缓存目录里

README_zh.md

@@ -48,7 +48,7 @@ source trt/activate.sh
 
 ```shell
 export REMOTE_PATH=<远程地址>
-huggingface-cli download Tencent-Hunyuan/TensorRT-engine ${REMOTE_PATH} ./ckpts/t2i/model_trt/engine/
+huggingface-cli download Tencent-Hunyuan/TensorRT-engine ${REMOTE_PATH} --local-dir ./ckpts/t2i/model_trt/engine/
 ln -s ${REMOTE_PATH} ./ckpts/t2i/model_trt/engine/model_onnx.plan
 ```