Log Message:
-----------
Fix slightly misleading description of PERFORM syntax.
Modified Files:
--------------
pgsql-server/doc/src/sgml:
plpgsql.sgml (r1.46 -> r1.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/plpgsql.sgml.diff?r1=1.46&r2=1.47)