pgsql: Doc: fix examples of # operators so they actually work.

Doc: fix examples of # operators so they actually work.

These worked as-is until around 7.0, but fail in newer versions because
there are more operators named "#".  Besides it's a bit inconsistent that
only two of the examples on this page lack type names on their constants.

Report: <20160923081530.1517.75670@wrigleys.postgresql.org>

Branch
------
REL9_3_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/444183934955275c21f37625ea72fc6e6a222d21

Modified Files
--------------
doc/src/sgml/func.sgml | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)