Обсуждение: pgsql: Fix incorrect CREATE STATISTICS example in docs

Fix incorrect CREATE STATISTICS example in docs

The example was incorrectly using parantheses around the list of columns, so
just drop them.

Reported-By: Robert Haas
Discussion: https://postgr.es/m/CA%2BTgmoZZEMAqWMAfvLHZnK57SoxOutgvE-ALO94WsRA7zZ7wyQ%40mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/7f44efa10b6ea3e5fd125e2800f357f38ab1068c

Modified Files
--------------
doc/src/sgml/ref/create_statistics.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)