Log Message:-----------Improve documentation of pg_typeof, per gripe from David Wheeler.
Modified Files:-------------- pgsql/doc/src/sgml: func.sgml (r1.455 -> r1.456) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml?r1=1.455&r2=1.456)
