Documentation/ko_KR/howto: Update broken web addresses

Commit 0ea6e611 ("Documentation: update broken web addresses.")
removed a link to 'http://patchwork.ozlabs.org

' in howto, but the change
has not applied to the Korean translation.  This commit simply applies
the change to the Korean translation.  The link is restored now, though.

Signed-off-by: SeongJae Park <sjpark@amazon.de>
Link: https://lore.kernel.org/r/20200131205237.29535-4-sj38.park@gmail.com


Signed-off-by: Jonathan Corbet <corbet@lwn.net>