Created the Korean translation for CONTRIBUTING.md document

[andylang8445]

What does this PR do?

Added the Korean translation of the document

For resources

Description

Why is this valuable (or not)?

How do we know it's really free?

For book lists, is it a book? For course lists, is it a course? etc.

Checklist:

• [√ ] Read our contributing guidelines
• [ √] Search for duplicates.
• [ √] Include author(s) and platform where appropriate.
• [ √] Put lists in alphabetical order, correct spacing.
• [ √] Add needed indications (PDF, access notes, under construction)

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[eshellman]

language code for korean is ko, not kr

[andylang8445]

I have updated the title of the document

[davorpa]

@eshellman I'm confused. Korean is already here #5837. And there are too much differences between both

Needs disambiguation (https://www.localeplanet.com/icu/iso639.html#ko):

• North Korea (ko_KP)
• South Korea (ko_KR)

[andylang8445]

Since this is the translation of the document, numerous different way of translation exists. Also South Korean and North Korean "Korean" language has quite a big difference between. To be clear, this specific doc is using the South Korean (ko_KR) language.

[eshellman]

Please work with @filoscoder to see if improvements can be made. Two heads are better than one, and 나는 한국어를 읽거나 쓰지 않는다
Thanks, and welcome to free-programming-books!