doc: update guidelines on non-ASCII characters in docs
Branch------master
Details-------https://git.postgresql.org/pg/commitdiff/fb21ed6c38da719149443e78048790c0347e2c9b
Modified Files--------------doc/src/sgml/README.non-ASCII | 9 +++++----1 file changed, 5 insertions(+), 4 deletions(-)
