common/n*: add and update Korean translation (#14636)

* common/n*: add and update Korean translation

* Update pages.ko/common/nudoku.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* Update pages.ko/common/ncmpcpp.md

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

* Update pages.ko/common/neofetch.md

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

* Update pages.ko/common/nextflow.md

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

* Update pages.ko/common/nslookup.md

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

* Update pages.ko/common/netserver.md

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

* Update pages.ko/common/nuclei.md

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

* Update pages.ko/common/nuclei.md

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

* Update pages.ko/common/nslookup.md

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

* Update pages.ko/common/nextflow.md

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

* Update pages.ko/common/nvm.fish.md

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

---------

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Chooooo <contact@choo.ooo>

pages.ko/common/nice.md

@@ -0,0 +1,13 @@
+# nice
+
+> 프로그램을 사용자 정의 스케줄링 우선순위(친화도)로 실행.
+> 친화도 값은 -20(가장 높은 우선순위)에서 19(가장 낮은 우선순위)까지 범위.
+> 더 많은 정보: <https://www.gnu.org/software/coreutils/nice>.
+
+- 변경된 우선순위로 프로그램 실행:
+
+`nice -{{친화도_값}} {{명령어}}`
+
+- 명시적 옵션으로 우선순위 정의:
+
+`nice {{-n|--adjustment}} {{친화도_값}} {{명령어}}`