update: revert manual https

atom.xml

@@ -19,7 +19,7 @@ layout: null
 
  <entry>
    <title>{{ post.title }}</title>
-   <link href="https://{{ site.url }}{{ post.url }}.html"/>
+   <link href="{{ site.url }}{{ post.url }}.html"/>
    <id>{{ site.url }}{{ post.id }}</id>
    <updated>{{ post.date | date_to_xmlschema }}</updated>
    <content type="html">{{ post.content | xml_escape | truncatewords:50 }}</content>