Korean Pytorch book add

[maldron0309]

What does this PR do?

Add resource(s) | Remove resource(s) | Add info | Improve repo
Add info

For resources

Description

Why is this valuable (or not)?

I didn't have a book that covered Pytorch, so I added

How do we know it's really free?

free

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

book

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).
• Used an informative name for this pull request.

Follow-up

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

[eshellman]

There's a pytorch book in the Machine learning section, could you move this book to that section?

[maldron0309]

I've created and added a separate section for machine learning!

[eshellman]

1. ONly one listing per book.
2. If you add a category, you need to add it to the index

[github-actions]

Linter failed, fix the error(s):

free-programming-books/books/free-programming-books-ko.md
3:1-42:22  warning  Alphabetical ordering: swap l.22 and l.21  alphabetize-lists  remark-lint

[github-actions]

Linter failed, fix the error(s):

free-programming-books/books/free-programming-books-ko.md
3:1-42:22  warning  Alphabetical ordering: swap l.22 and l.21  alphabetize-lists  remark-lint