🌐 [i18n-KO] Update README_ko.md (#33098)

* Update README_ko.md

Delete the blank paragraph in the language selection button and Edit to synchronize with the English version of README.md

* [i18n-KO] Update README_ko.md

* Additional edit for keep consistency with main [documentation](https://huggingface.co/docs/transformers/v4.44.2/ko/index). (메인 문서와 일관성 유지를 위한 수정)

* Update README_ko.md

Additional update.
* Change docs link to Korean translated page if it exists.

* Change doc link to korean translated if it exists.

Change the link of doc and delete a row 'migration' of the table Learn more[더 알아보기], since it does not exist in the main version of doc.

* modify a link of the main README.md

from
`https://huggingface.co/docs/transformers/index#supported-frameworks`

to
`https://huggingface.co/docs/transformers/index#supported-models-and-frameworks`

since the title of 'supported table' changed.

* [i18n-ko] edit links and sync with main `README.md`

* docs/change comment to Korean1

Change English comment to Korean

Co-authored-by: Jihun Lim <[email protected]>

* docs/change comment to Korean2

Change English comment to Korean

Co-authored-by: Jihun Lim <[email protected]>

* revise to original

to seperate `edit_README_ko_md` and `README.md`

* Synchronization with English documentation.

Synchronization with English documentation, and translated a line of comment from English to Korean.

---------

Co-authored-by: Jihun Lim <[email protected]>