Log Message:
-----------
Document that 'deleted' is also tracked by autovacuum.
Modified Files:
--------------
pgsql/doc/src/sgml:
maintenance.sgml (r1.75 -> r1.76)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/maintenance.sgml.diff?r1=1.75&r2=1.76)