🌐 [i18n-KO] Translated visual_question_answering.md to Korean (#25679)

* docs: ko: visual_question_answering.md

* feat: chatgpt draft

tosquash: add code blocks

* fix: manual edits

~L34 14:25
~L126 16:52
~L224 17:00
~L335 17:11
~EOF 17:18

* fix: self-correction

* amend grammar, phrasing

* docs: add new entry to _toctree.yml

* fix: use terms from glossary

Co-authored-by: SeongWooChoi <46990061+nuatmochoi@users.noreply.github.com>

---------

Co-authored-by: SeongWooChoi <46990061+nuatmochoi@users.noreply.github.com>

docs/source/ko/_toctree.yml

@@ -73,6 +73,8 @@
         title: 이미지 캡셔닝
       - local: tasks/document_question_answering
         title: 문서 질의 응답(Document Question Answering)
+      - local: tasks/visual_question_answering
+        title: 시각적 질의응답 (Visual Question Answering)
     title: 멀티모달
     isExpanded: false
   title: 태스크 가이드