Fix typo in monitoring.sgml.

MasaoFujii · MasaoFujii · commit 61b73940452b · 2020-03-03T15:01:47.000+09:00
Author: Noriyoshi Shinoda
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
@@ -4408,7 +4408,7 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid,
      <entry>
       Amount of data streamed. This counter only advances
       when the phase is <literal>streaming database files</literal> or
-      <literal>transfering wal files</literal>.
+      <literal>transferring wal files</literal>.
      </entry>
     </row>
     <row>
