pgsql: doc: improve createdb example

doc: improve createdb example

The previous example could error out due to encoding mismatches; use
-T/template instead.

Reported-by: Jason O'Donnell

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/c709b113e8f5433ea2a66b2fb08d9324dd596642

Modified Files
--------------
doc/src/sgml/ref/createdb.sgml | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

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