common/s*: add and update Korean translation (#14666)

* common/s*: add and update Korean translation

* scamper: fix typo

* Update pages.ko/common/simplehttpserver.md

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

* Update pages.ko/common/steamcmd.md

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

---------

Co-authored-by: Sebastiaan Speck <shem.speck@gmail.com>
Co-authored-by: Chooooo <contact@choo.ooo>

pages.ko/common/spctoppm.md

@@ -0,0 +1,8 @@
+# spctoppm
+
+> Atari 압축 스펙트럼 이미지를 PPM 이미지로 변환.
+> 더 많은 정보: <https://netpbm.sourceforge.net/doc/spctoppm.html>.
+
+- SPC 파일을 PPM 이미지로 변환:
+
+`spctoppm {{경로/대상/입력.spc}} > {{경로/대상/출력.ppm}}`