Doc: fix incorrect punctuation

Author: Noboru Saito <noborusai@gmail.com>
Discussion: https://postgr.es/m/CAAM3qnJtv5YbjpwDfVOYN2gZ9zGSLFM1UGJgptSXmwfifOZJFQ@mail.gmail.com
Backpatch-through: 17

diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index eabc4f5d172edf8a5dcdb637508855346a9ea3c2..d73c627382acefe90150bb69436ee22106df03f6 100644 (file)
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -1148,7 +1148,7 @@ description | Waiting for a newly initialized WAL file to reach durable storage
    <note>
     <para>
      Extensions can add <literal>Extension</literal>,
-     <literal>InjectionPoint</literal>. and <literal>LWLock</literal> events
+     <literal>InjectionPoint</literal>, and <literal>LWLock</literal> events
      to the lists shown in <xref linkend="wait-event-extension-table"/> and
      <xref linkend="wait-event-lwlock-table"/>. In some cases, the name
      of an <literal>LWLock</literal> assigned by an extension will not be