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/sbigtopgm.md

@@ -0,0 +1,8 @@
+# sbigtopgm
+
+> SBIG CCDOPS 파일을 PGM으로 변환.
+> 더 많은 정보: <https://netpbm.sourceforge.net/doc/sbigtopgm.html>.
+
+- SBIG CCDOPS 이미지 파일을 PGM으로 변환:
+
+`sbigtopgm {{경로/대상/입력_파일.sbig}} > {{경로/대상/출력.pgm}}`