🌐 Add Korean translation for docs/ko/docs/tutorial/sql-databases.md

[NinaHwang]

This PR translates tutorial/sql-databases.md in Korean.

related: #2017

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (cf73051) 100.00% compared to head (0b301ae) 100.00%.

❗ Current head 0b301ae differs from pull request most recent head d21f758. Consider uploading reports for the commit d21f758 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##            master     #4170     +/-   ##
===========================================
  Coverage   100.00%   100.00%             
===========================================
  Files          540       409    -131     
  Lines        13969     10264   -3705     
===========================================
- Hits         13969     10264   -3705     

see 177 files with indirect coverage changes

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[github-actions]

📝 Docs preview for commit 7a94c05 at: https://618cba212a9dccd423d4ef2e--fastapi.netlify.app

[DevDae]

Appreciate your works!
Please check my review and give your opinions 😄
Thanks 🚀

[github-actions]

📝 Docs preview for commit 0822f0f at: https://619ee12925633b2bdce2fad1--fastapi.netlify.app

[github-actions]

📝 Docs preview for commit d4b5966 at: https://61b15a1d062b8498cac19477--fastapi.netlify.app

[github-actions]

📝 Docs preview for commit 0b301ae at: https://61b2131e9b67f479a0e920f7--fastapi.netlify.app

[tiangolo]

📝 Docs preview for commit d21f758 at: https://649a1d1605f6af15bed6d0a4--fastapi.netlify.app

[tiangolo]

Thank you! I'm still waiting for others to review this to be able to merge it, meanwhile, maybe you could help me review some of the other Korean translations, that way if they are approved by each other, I could merge them. 🤓

https://github.com/tiangolo/fastapi/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc+label%3Alang-ko+label%3Aawaiting-review

Maybe @DevDae could review again after the requested changes? 🙏