Add Chinese ai free courses

[cy920820]

[github-actions[bot]]

Linter failed, fix the error(s):

free-programming-books/courses/free-courses-zh.md
   3:1-7:12  warning  Alphabetical ordering: swap l.7 and l.6                                alphabetize-lists  remark-lint
28:1-29:101  warning  Incorrect number of blank lines between last section and next heading  blank-lines-1-0-2  remark-lint

[github-actions[bot]]

Linter failed, fix the error(s):

free-programming-books/courses/free-courses-zh.md
3:1-7:12  warning  Alphabetical ordering: swap l.7 and l.6  alphabetize-lists  remark-lint

[github-actions[bot]]

Linter failed, fix the error(s):

free-programming-books/courses/free-courses-zh.md
3:1-7:12  warning  Alphabetical ordering: swap l.4 and l.3  alphabetize-lists  remark-lint

[eshellman]

Thanks, and welcome to free-programming-books!