Log Message:-----------Fix doc plperl doc with is -> are change.
Modified Files:-------------- pgsql/doc/src/sgml: plperl.sgml (r2.84 -> r2.85) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/plperl.sgml?r1=2.84&r2=2.85)
