🌐 [i18n-KO] Translated sequence_classification.mdx to Korean (#22655)

* docs: ko: init: tasks/sequence_classification.mdx

* docs: ko: revised: change voca in tasks/sequence_classification.mdx

* docs: ko: revised: [RE] change voca in tasks/sequence_classification.mdx

* docs: ko: revised: spell check and sentence naturally in tasks/sequence_classification.mdx

* docs: ko: revised: spell check and consistent vocabulary in tasks/sequence_classification.mdx

* docs: ko: revised: Add full stop and change voca in tasks/sequence_classification.mdx

* docs: ko: revised: sync first section templates in tasks/sequence_classification.mdx

Co-authored-by: Wonhyeong Seo <wonhseo@kakao.com>

* fix: revert use of full-stops to colons

* colons are used to emphasize the code block that follows

* @0525hhgus @wonhyeongseo docs: ko: revised: sync second section templates in tasks/sequence_classification.mdx

Co-Authored-By: Wonhyeong Seo <wonhseo@kakao.com>

* docs: ko: revised: change 'train', 'finetuning' in tasks/sequence_classification.mdx

---------

Co-authored-by: Wonhyeong Seo <wonhseo@kakao.com>

Author: 0525hhgus

docs/source/ko/_toctree.yml

@@ -49,8 +49,8 @@
     - local: in_translation
       title: (번역중) Text generation strategies
     - sections:
-      - local: in_translation
-        title: (번역중) Text classification
+      - local: tasks/sequence_classification
+        title: 텍스트 분류
       - local: in_translation
         title: (번역중) Token classification
       - local: in_translation