kokr/doc: Update memory-barriers.txt for read-to-write dependencies

This commit applies upstream change, commit 66ce3a4d ("doc: Update
memory-barriers.txt for read-to-write dependencies") to Korean
translation.

Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>