[i18n-KO] Translated video_classification.mdx to Korean
# What does this PR do?

Translated the video_classification.mdx file of the documentation to Korean.
Thank you in advance for your review.


## Before reviewing
 - [x] Check for missing / redundant translations (번역 누락/중복 검사)
 - [x] Grammar Check (맞춤법 검사)
 - [x] Review or Add new terms to glossary (용어 확인 및 추가)
 - [x] Check Inline TOC (e.g. [[lowercased-header]])
 - [x] Check live-preview for gotchas (live-preview로 정상작동 확인)

## Who can review(initial)?

Team PseudoLab, may you please review this PR? @0525hhgus, @HanNayeoniee, @sim-so, @gabrielwithappy, @HanNayeoniee, @wonhyeongseo, @jungnerd


## Before submitting
- [x] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
- [x] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests),
      Pull Request section?
- [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link
      to it if that's the case.
- [x] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [ ] Did you write any new necessary tests?

## Who can review(initial)?

@sgugger, @ArthurZucker, @eunseojo May you please review this PR?


_The documentation is not available anymore as the PR was closed or merged._<|||||>Hey! Sorry for the long delay. There seems to be 2 suggestions not adresses, should we wait for these? 🤗 <|||||>@ArthurZucker the suggestions that i didn't accept were about same sentences or ealier version of our glossary so you don't need to wait for the other suggestions to be accepted!! Thank you!!