Add support for model downloads from ModelScope

docs/how_to_download_models_en.md

-#### Install Git LFS
+### Install Git LFS
 Before you begin, make sure Git Large File Storage (Git LFS) is installed on your system. Install it using the following command:
 
 ```bash
 git lfs install
 ```
 
-#### Download the Model from Hugging Face
+### Download the Model from Hugging Face
 To download the `PDF-Extract-Kit` model from Hugging Face, use the following command:
 
 ```bash
@@ -15,13 +15,37 @@ git lfs clone https://huggingface.co/wanderkid/PDF-Extract-Kit
 Ensure that Git LFS is enabled during the clone to properly download all large files.
 
 
-Move the 'models' directory to a directory on a larger disk space, preferably an SSD.
+
+### Download the Model from ModelScope
+
+#### SDK Download
+
+```bash
+# First, install the ModelScope library using pip:
+pip install modelscope
+```
+
+```python
+# Use the following Python code to download the model using the ModelScope SDK:
+from modelscope import snapshot_download
+model_dir = snapshot_download('wanderkid/PDF-Extract-Kit')
+```
+
+#### Git Download
+Alternatively, you can use Git to clone the model repository from ModelScope:
+
+```bash
+git clone https://www.modelscope.cn/wanderkid/PDF-Extract-Kit.git
+```
+
+
+Put [model files]() here:
 
 ```
 ./
 ├── Layout
 │   ├── config.json
-│   └── model_final.pth
+│   └── weights.pth
 ├── MFD
 │   └── weights.pt
 ├── MFR

docs/how_to_download_models_zh_cn.md

-#### 安装 Git LFS
+### 安装 Git LFS
 开始之前，请确保您的系统上已安装 Git 大文件存储 (Git LFS)。使用以下命令进行安装
 
 ```bash
 git lfs install
 ```
 
-#### 从 Hugging Face 下载模型
+### 从 Hugging Face 下载模型
 请使用以下命令从 Hugging Face 下载 PDF-Extract-Kit 模型：
 
 ```bash
@@ -15,6 +15,29 @@ git lfs clone https://huggingface.co/wanderkid/PDF-Extract-Kit
 确保在克隆过程中启用了 Git LFS，以便正确下载所有大文件。
 
 
+### 从 ModelScope 下载模型
+
+#### SDK下载
+
+```bash
+# 首先安装modelscope
+pip install modelscope
+```
+
+```python
+# 使用modelscope sdk下载模型
+from modelscope import snapshot_download
+model_dir = snapshot_download('wanderkid/PDF-Extract-Kit')
+```
+
+#### Git下载
+也可以使用git clone从 ModelScope 下载模型:
+
+```bash
+git clone https://www.modelscope.cn/wanderkid/PDF-Extract-Kit.git
+```
+
+
 将 'models' 目录移动到具有较大磁盘空间的目录中，最好是在固态硬盘(SSD)上。