Documentation: Update SeongJae's email address

This commit updates SeongJae's email addresses in documents to his
preferred one.
Signed-off-by: SeongJae Park <sj@kernel.org>
Link: https://lore.kernel.org/r/20210917122222.3109-1-sj@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/ABI/testing/sysfs-driver-xen-blkback

@@ -29,7 +29,7 @@ Description:
 What:           /sys/module/xen_blkback/parameters/buffer_squeeze_duration_ms
 Date:           December 2019
 KernelVersion:  5.6
-Contact:        SeongJae Park <sjpark@amazon.de>
+Contact:        SeongJae Park <sj@kernel.org>
 Description:
                 When memory pressure is reported to blkback this option
                 controls the duration in milliseconds that blkback will not
@@ -39,7 +39,7 @@ Description:
 What:           /sys/module/xen_blkback/parameters/feature_persistent
 Date:           September 2020
 KernelVersion:  5.10
-Contact:        SeongJae Park <sjpark@amazon.de>
+Contact:        SeongJae Park <sj@kernel.org>
 Description:
                 Whether to enable the persistent grants feature or not.  Note
                 that this option only takes effect on newly created backends.

Documentation/ABI/testing/sysfs-driver-xen-blkfront

@@ -12,7 +12,7 @@ Description:
 What:           /sys/module/xen_blkfront/parameters/feature_persistent
 Date:           September 2020
 KernelVersion:  5.10
-Contact:        SeongJae Park <sjpark@amazon.de>
+Contact:        SeongJae Park <sj@kernel.org>
 Description:
                 Whether to enable the persistent grants feature or not.  Note
                 that this option only takes effect on newly created frontends.

Documentation/translations/ko_KR/memory-barriers.txt

 NOTE:
 This is a version of Documentation/memory-barriers.txt translated into Korean.
-This document is maintained by SeongJae Park <sj38.park@gmail.com>.
+This document is maintained by SeongJae Park <sj@kernel.org>.
 If you find any difference between this document and the original file or
 a problem with the translation, please contact the maintainer of this file.
 
@@ -10,13 +10,13 @@ a fork.  So if you have any comments or updates for this file please
 update the original English file first.  The English version is
 definitive, and readers should look there if they have any doubt.
 
-===================================
+=================================
 이 문서는
 Documentation/memory-barriers.txt
 의 한글 번역입니다.
 
-역자： 박성재 <sj38.park@gmail.com>
-===================================
+역자： 박성재 <sj@kernel.org>
+=================================
 
 
 			 =========================