Log Message:
-----------
Update documentation for tsvector duplicate elimination:
! Duplicate positions for the same lexeme are discarded.
Modified Files:
--------------
pgsql/doc/src/sgml:
datatype.sgml (r1.222 -> r1.223)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/datatype.sgml?r1=1.222&r2=1.223)