添加头部rss输出链接

public/categories/page/5/index.html

@@ -14,6 +14,7 @@
   <link rel="stylesheet" href="/css/nprogress.min.css">
   <link rel="stylesheet" href="https://unpkg.com/@waline/client@v3/dist/waline.css" />
   <link rel="stylesheet" href="/css/barrager.css">
+  <link rel="alternate" type="application/rss+xml" title="优世界" href="/rss.xml">
   <script src="/js/jquery.min.js"></script>
   <script src="/js/jquery.barrager.js"></script>
   <script src="/js/jquery.scrollUp.min.js"></script>