fix: 下载配置接口加null检查，前端去掉responseType:text让axios自动解析

web/src/api/index.js

@@ -39,7 +39,7 @@ export default {
   configs: {
     list: () => api.get('/configs'),
     pending: () => api.get('/configs/pending'),
-    download: (siteId, version) => api.get(`/configs/${siteId}/${version}`, { responseType: 'text' }),
+    download: (siteId, version) => api.get(`/configs/${siteId}/${version}`),
     approve: (id, comment) => api.post(`/admin/reviews/${id}/approve`, null, { params: { comment } }),
     reject: (id, comment) => api.post(`/admin/reviews/${id}/reject`, null, { params: { comment } })
   },