fix indentations

cps/templates/index.xml

@@ -39,7 +39,7 @@
     <updated>{{ current_time }}</updated>
     <content type="text">{{_('Show Random Books')}}</content>
   </entry>
-{% if not current_user.is_anonymous %}
+  {% if not current_user.is_anonymous %}
   <entry>
     <title>{{_('Read Books')}}</title>
     <link rel="subsection" href="{{url_for('feed_read_books')}}" type="application/atom+xml;profile=opds-catalog"/>
@@ -47,7 +47,7 @@
     <updated>{{ current_time }}</updated>
     <content type="text">{{_('Read Books')}}</content>
   </entry>
-{% endif %}
+  {% endif %}
   <entry>
     <title>{{_('Unread Books')}}</title>
     <link rel="subsection" href="{{url_for('feed_unread_books')}}" type="application/atom+xml;profile=opds-catalog"/>