更新 development-plan.mdx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: huangyiirene

content/docs/development-plan.mdx

@@ -172,7 +172,7 @@ Repository Structure:
 ├── .github/
 │   └── workflows/     # CI/CD automation
 ├── vercel.json        # Deployment configuration
-└── objectdocs.json    # Site metadata
+└── docs.site.json     # Site metadata
 ```
 
 ### CI/CD Pipeline