docs(ko): re-translation of korean documents (reference/*)

[niceplugin]

Re-translation of Korean Documents

Improved the naturalness of some content.

Re-translated All Documents in the /reference/ Directory

• Corrected typos
• Adjusted content that should not have been translated
• Re-translated homophones and synonyms that arose during translation
• Standardized terminology used in the pinia and router documents
• Fixed incorrect external links

Updated Terms in the /config/ko.ts File

• Edited navigation menu text
• Updated other miscellaneous texts

[niceplugin]

I have reviewed and improved the content of all documents in the /reference/ directory. 🎉

[brc-dd]

Thanks