doc: remove extra blank line at the top of SGML files
Backpatch-through: 9.5
Branch------REL_10_STABLE
Details-------https://git.postgresql.org/pg/commitdiff/d3ebc423c5d24582273937e89635955583cdfdc5
Modified Files--------------doc/src/sgml/ref/copy.sgml | 1 -1 file changed, 1 deletion(-)
