Log Message:-----------Fix mis-description of XML Schema functions, per discussion.
Modified Files:-------------- pgsql/doc/src/sgml: func.sgml (r1.477 -> r1.478) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml?r1=1.477&r2=1.478)
