Add missing XML ID attribute

Discussion: https://www.postgresql.org/message-id/dc813a6f-60d9-991f-eecd-675a0921de11@gmx.de

diff --git a/doc/src/sgml/pgbuffercache.sgml b/doc/src/sgml/pgbuffercache.sgml
index 27fdfc67a39c26d74e5beccbd2f9920ed114ec5d..afe2d97834049e466d66bb58c0f51fd3cdc65047 100644 (file)
--- a/doc/src/sgml/pgbuffercache.sgml
+++ b/doc/src/sgml/pgbuffercache.sgml
@@ -273,7 +273,7 @@
   </para>
  </sect2>
 
- <sect2>
+ <sect2 id="pgbuffercache-usage-counts">
   <title>The <function>pg_buffercache_usage_counts()</function> Function</title>
 
   <para>