doc PG 18 relnotes: fix markup

Reported-by: Peter Smith
Discussion: https://postgr.es/m/CAHut+PswZ7wFtpNgv3bdtYK5D0eGMpvz4CcnAxvj7gR_acazGQ@mail.gmail.com

diff --git a/doc/src/sgml/release-18.sgml b/doc/src/sgml/release-18.sgml
index 2ae03065f9451b90ef6b804b57553c108f4cc619..67fde0c1baa514090f4f1320fb8b483c27dc893a 100644 (file)
--- a/doc/src/sgml/release-18.sgml
+++ b/doc/src/sgml/release-18.sgml
@@ -2745,7 +2745,7 @@ This is to handle cases where a pre-Postgres 18 cluster's default CPU signedness
     </sect4>
 
     <sect4 id="release-18-logicalrep-app">
-     <title>Logical Replication Applications></title>
+     <title>Logical Replication Applications</title>
 
      <itemizedlist>