update Korean section of contributing.md

[baadaa]

Description

Update the Korean translation section of contribute.md. Prior to this commit, the section seemed to refer to an older version of the file and had missing parts.

Issue fixed

• Update existing translations to better match recent changes to the contribution guides
• Add new sentences to provide translations to newly added guides.

Type of changes

• ⚪ Bug fix (Change that fixed an issue)
• ⚪ Breaking change (Change that can cause existing functionality to change)
• ⚪ Improvement (Change that improves the code. Maybe performance or development improvement)
• ⚪ Feature (Change that adds new functionality)
• 🔘 Documentation change (Change that modifies documentation. Maybe typo fixes)

Checklist:

• 🔘 My code follows the project code style
• ⚪ I have written test for my code and it has been tested
• ⚪ All existing tests have been passed
• ⚪ I have attached a screenshot/video to visualize my change if possible

[ZeroX-DG]

@Rokt33r can you review this please?

[Rokt33r]

기여해주셔서 감사합니다!