🌐 [i18n-KO] Translated mask_generation.md to Korean (#32257)

* docs: ko: tasks/mask_generation.md

* feat: nmt draft

* fix : toc local

* fix : manual edits

* fix : ko-toctree

* fix: resolve suggestions

Co-authored-by: boyunJang <gobook1234@naver.com>
Co-authored-by: Chaewon Song <chaewon1019@ewhain.net>

* fix: resolve suggestions

Co-authored-by: boyunJang <gobook1234@naver.com>
Co-authored-by: Chaewon Song <chaewon1019@ewhain.net>

* fix: resolve suggestions

* fix: resolve suggestions

* fix: resolve suggestions

---------

Co-authored-by: boyunJang <gobook1234@naver.com>
Co-authored-by: Chaewon Song <chaewon1019@ewhain.net>

docs/source/ko/_toctree.yml

@@ -77,8 +77,8 @@
         title: (번역중) Image-to-Image
       - local: in_translation
         title: (번역중) Image Feature Extraction
-      - local: in_translation
-        title: (번역중) Mask Generation
+      - local: tasks/mask_generation
+        title: 마스크 생성
       - local: in_translation
         title: (번역중) Knowledge Distillation for Computer Vision
     title: 컴퓨터 비전