Add missing subtitle for compressed archive logs

diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml
index ef18b0301536031ad491aa3e2a2bd6c2a56d76dc..bd95977171c32274ae6aabf5e1d5bb6c71083cfc 100644 (file)
--- a/doc/src/sgml/backup.sgml
+++ b/doc/src/sgml/backup.sgml
@@ -1226,6 +1226,11 @@ tar -rf /var/lib/pgsql/backup.tar /var/lib/pgsql/archive/
       Please remember to add error handling to your backup scripts.
      </para>
 
+     </sect3>
+
+     <sect3 id="compressed-archive-logs">
+      <title>Compressed Archive Logs</title>
+
      <para>
       If archive storage size is a concern, use <application>pg_compresslog</>,
       <ulink url="http://pglesslog.projects.postgresql.org"></ulink>, to