doc: Add missing backend_type to pg_stat_activity

Commit 0c679464a8 added the missing backendDesc for B_STANDALONE_BACKEND
but missed updating the list of backend types in the documentation.  Fix
by adding it to the list.

Author: Noriyoshi Shinoda 
Discussion: https://postgr.es/m/DM4PR84MB1734ECEA02BCB59564E8FC03EE4A9@DM4PR84MB1734.NAMPRD84.PROD.OUTLOOK.COM

diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index df5242fa80fc7e1c5c45855259ebeb716d2f1d8a..40ad4191949197ce4c4faf79b2f38dfd52470d03 100644 (file)
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -988,7 +988,7 @@ postgres   27093  0.0  0.0  30096  2752 ?        Ss   11:34   0:00 postgres: ser
        logical replication worker,
        parallel worker, background writer,
        client backend, checkpointer,
-       archiver,
+       archiver, standalone backend,
        startup, walreceiver,
        walsender and walwriter.
        In addition, background workers registered by extensions may have