fix(ci): 更新 Vercel 部署工作流中的项目 ID 字段

Author: weilei

.github/workflows/deploy.yml

@@ -57,7 +57,7 @@ jobs:
         with:
           vercel-token: ${{ secrets.VERCEL_TOKEN }}
           vercel-org-id: ${{ secrets.VERCEL_ORG_ID }}
-          vercel-project-id: ${{ secrets.VERCEL_PROJECT_ID }}
+          vercel-project-id: ${{ secrets.VERCEL_PROJECT_ID_DOCS }}
           working-directory: docs
           vercel-args: ${{ github.event_name == 'push' && '--prod' || '' }}