Fix: After executing npm i --force locally, the login page cannot be opened #4290 (#4292)

### What problem does this PR solve?

Fix: After executing npm i --force locally, the login page cannot be
opened #4290

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

README_zh.md

@@ -299,7 +299,7 @@ docker build --build-arg NEED_MIRROR=1 -f Dockerfile -t infiniflow/ragflow:night
 6. 安装前端依赖：  
    ```bash
    cd web
-   npm install --force
+   npm install
    ```  
 7. 启动前端服务：  
    ```bash