doc: remove extra blank line at the top of SGML files
Backpatch-through: 9.5
Branch------REL9_6_STABLE
Details-------https://git.postgresql.org/pg/commitdiff/cd61b8a0257a674d67bd14deec2b746852f4fd61
Modified Files--------------doc/src/sgml/ref/copy.sgml | 1 -1 file changed, 1 deletion(-)
