trivial typo in vacuum progress doc

diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
new file mode 100644
index cb22afb..105d541
*** a/doc/src/sgml/monitoring.sgml
--- b/doc/src/sgml/monitoring.sgml
*************** SELECT pg_stat_get_backend_pid(s.backend
*** 2575,2581 ****
         Number of heap blocks scanned.  Because the
         <link linkend="storage-vm">visibility map</> is used to optimize scans,
         some blocks will be skipped without inspection; skipped blocks are
!        included this total, so that this number will eventually become
         equal to <structfield>heap_blks_total</> when the vacuum is complete.
         This counter only advances when the phase is <literal>scanning heap</>.
       </entry>
--- 2575,2581 ----
         Number of heap blocks scanned.  Because the
         <link linkend="storage-vm">visibility map</> is used to optimize scans,
         some blocks will be skipped without inspection; skipped blocks are
!        included in this total, so that this number will eventually become
         equal to <structfield>heap_blks_total</> when the vacuum is complete.
         This counter only advances when the phase is <literal>scanning heap</>.
       </entry>