This PR fixes several structural and linking issues in the Korean translation of the Hugging Face Course that were affecting the user experience for Korean learners.

[braintrue]

Issue 1: The text contained an incorrect particle usage:

Incorrect: 파이썬 버전을 출력되어야 합니다
Correct: 파이썬 버전이 출력되어야 합니다
What was changed:
Changed the object marker "을" to the subject marker "이" in the sentence describing Python version output. In Korean grammar, when describing that something "should be displayed/output", the subject (Python version) should use the subject marker "이" rather than the object marker "을".

File modified: chapters/ko/chapter0/1.mdx (line 53)

This is a minimal one-character fix that corrects the grammatical error while maintaining the original meaning of the sentence.

Issue 2:
The Korean _toctree.yml file contained duplicate entries for "3. 🤗 사전훈련된 모델 미세조정" (Fine-tuning a pretrained model), which caused navigation confusion:

Before:

• title: 3. 🤗 사전훈련된 모델 미세조정
  sections:

  • local: chapter3/2
    title: 데이터 처리
  • local: chapter3/5
    title: 학습 곡선 이해하기

• title: 3. 🤗 사전훈련된 모델 미세조정 # Duplicate!
  sections:

  • local: chapter3/3
    title: Trainer API를 사용한 모델 미세조정
    After:

• title: 3. 🤗 사전훈련된 모델 미세조정
  sections:

  • local: chapter3/2
    title: 데이터 처리
  • local: chapter3/3
    title: Trainer API를 사용한 모델 미세조정
  • local: chapter3/5
    title: 학습 곡선 이해하기

2. Incorrect Notebook Links
   All Korean course files were linking to English notebooks (course/en/chapter*) instead of Korean ones (course/ko/chapter*), preventing Korean users from accessing localized notebook content.

Before:

notebooks={[
{label: "Google Colab", value: "https://colab.research.google.com/github/huggingface/notebooks/blob/master/course/en/chapter3/section2.ipynb"},
{label: "Aws Studio", value: "https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/master/course/en/chapter3/section2.ipynb"},
]}
After:

notebooks={[
{label: "Google Colab", value: "https://colab.research.google.com/github/huggingface/notebooks/blob/master/course/ko/chapter3/section2.ipynb"},
{label: "Aws Studio", value: "https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/master/course/ko/chapter3/section2.ipynb"},
]}
Files Changed
chapters/ko/_toctree.yml: Fixed duplicate chapter structure
14 Korean MDX files across chapters 2, 3, 5, and 8: Updated notebook links from English (en) to Korean (ko)
Validation
✅ All files referenced in table of contents exist
✅ YAML syntax is valid
✅ Code formatting standards maintained
✅ No broken internal links
This improvement ensures Korean learners have a consistent and properly structured learning experience with access to the correct language-specific resources.

[HuggingFaceDocBuilderDev]

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