doc: add missing closing 'sect3' tag for ICU patch

diff --git a/doc/src/sgml/charset.sgml b/doc/src/sgml/charset.sgml
index 5c55f397f8ec238dbaee572c24d71f843cf50fd2..5e0a0bf7a7853157a79f2ae7e1ee199143d67386 100644 (file)
--- a/doc/src/sgml/charset.sgml
+++ b/doc/src/sgml/charset.sgml
@@ -730,6 +730,7 @@ CREATE COLLATION "de-DE-x-icu" FROM "de-x-icu";
     User-defined collations should be created in user schemas.  This also
     ensures that they are saved by <command>pg_dump</command>.
    </para>
+   </sect3>
   </sect2>
  </sect1>