Fix typo in monitoring.sgml.
Author: Noriyoshi Shinoda
@@ -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>
