Log Message:
-----------
Change psql \\ example to use single quotes, per TOm.
Modified Files:
--------------
pgsql/doc/src/sgml/ref:
psql-ref.sgml (r1.177 -> r1.178)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/psql-ref.sgml.diff?r1=1.177&r2=1.178)