shnsplit: fix typo, systemctl: update Korean translation, linux/s*: add Korean translation (#14715)

* linux/s*: add Korean translation

* systemctl: update Korean translation

* Update pages.ko/linux/sqfscat.md

Co-authored-by: Chooooo <contact@choo.ooo>

* Update pages.ko/linux/shar.md

Co-authored-by: Chooooo <contact@choo.ooo>

* Update pages.ko/linux/sqfstar.md

Co-authored-by: Chooooo <contact@choo.ooo>

* shnsplit: fix typo

* semanage: update Korean translation

---------

Co-authored-by: Chooooo <contact@choo.ooo>

pages.ko/linux/shutdown.md

@@ -0,0 +1,24 @@
+# shutdown
+
+> 시스템 종료 및 재부팅.
+> 더 많은 정보: <https://manned.org/shutdown.8>.
+
+- 즉시 전원 끄기 ([h]alt):
+
+`shutdown -h now`
+
+- 즉시 [r]재부팅:
+
+`shutdown -r now`
+
+- 5분 후 [r]재부팅:
+
+`shutdown -r +{{5}} &`
+
+- 오후 1시에 종료하기 (24시간 [h] 형식 사용):
+
+`shutdown -h 13:00`
+
+- 보류 중인 종료/재부팅 작업 [c]취소:
+
+`shutdown -c`