pages/categories/index.xml

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">

  <channel>
    <title>Categories on St. Page</title>
    <link>https://st.pages.except.one/categories/</link>
    <description>Recent content in Categories on St. Page</description>
    
    <language>en-us</language><atom:link href="https://st.pages.except.one/categories/index.xml" rel="self" type="application/rss+xml" />
  </channel>
</rss>