pgsql: docs: Improve documentation of \pset without arguments.

docs: Improve documentation of \pset without arguments.

The syntax summary previously failed to clarify that the first
argument is also optional.  The textual description did mention it,
but all the way at the bottom.  It fits better with the command
overview, so move it there, and fix the summary also.

Dilip Kumar, reviewed by Fabien Coelho

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/967a4e7f3107e3c5b732fe4f8e13a1f31a255e46

Modified Files
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doc/src/sgml/ref/psql-ref.sgml |   12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)