Motivation / Problem

To help Koreans contribute, we created a file that translated the README.md file and the knock-bugs.txt file into Korean
In particular, because the knock-bugs.txt file is indented, The translator of the web page does not translate.
Therefore, the translation file is expected to be helpful.

Description

I added two translated files.

Limitations

When each original file is changed,
it need to modify that part of the translation file.

Checklist for review

Some things are not automated, and forgotten often. This list is a reminder for the reviewers.

• The bug fix is important enough to be backported? (label: 'backport requested')
• This PR touches english.txt or translations? Check the guidelines
• This PR affects the save game format? (label 'savegame upgrade')
• This PR affects the GS/AI API? (label 'needs review: Script API')
  • ai_changelog.hpp, gs_changelog.hpp need updating.
  • The compatibility wrappers (compat_*.nut) need updating.
• This PR affects the NewGRF API? (label 'needs review: NewGRF')
  • newgrf_debug_data.h may need updating.
  • PR must be added to API tracker