fix: no yuque config error, close #2197

lib/routes/yuque/doc.js

@@ -1,20 +1,20 @@
 const axios = require('@/utils/axios');
 const config = require('@/config');
-// token通过process.env.YUQUE_TOKEN或者在config.js 配置
-const token = config.yuque.token;
 
 module.exports = async (ctx) => {
     const { repo_id } = ctx.params;
     const baseUrl = 'https://www.yuque.com';
     const repoUrl = `${baseUrl}/api/v2/repos/${repo_id}`;
     const docsUrl = `${repoUrl}/docs`;
+    const headers = {};
+    if (config.yuque.token) {
+        headers['X-Auth-Token'] = config.yuque.token;
+    }
     const fetchData = (url) =>
         axios({
             url,
             method: 'get',
-            headers: {
-                'X-Auth-Token': token,
-            },
+            headers,
         });
 
     const repoDetail = await fetchData(repoUrl);
@@ -45,7 +45,7 @@ module.exports = async (ctx) => {
 
                 if (value) {
                     item.description = value;
-                } else if (token) {
+                } else {
                     const docDetail = await fetchData(`${docsUrl}/${doc.id}`);
                     const { body_html } = docDetail.data.data;
                     item.description = body_html;