Thread: pgsql: Doc: use "an SQL" consistently rather than "a SQL"

Doc: use "an SQL" consistently rather than "a SQL"

Per the precedent set by 04539e73f, adjust article prefixes for "SQL" to
use "an" consistently rather than "a", i.e., "an es-que-ell" rather than
"a sequel".

Both of these are new to v18. Also see b1b13d2b5, d866f0374 and
7bdd489d3.

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/b51f86e49a7f119004c0ce5d0be89cdf98309141

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