🌐 Update Chinese translation for docs/tutorial/security/oauth2-jwt.md

[logan2d5]

Made the following changes:

1. Updated related content based on 📝 Update JWT auth documentation to use PyJWT instead of pyhon-jose #11589 .
2. Updated the example code.
3. Corrected several typos.

[tiangolo]

📝 Docs preview for commit 29133eb at: https://8c816662.fastapitiangolo.pages.dev

[alejsdev]

Nice. Thanks for the help! @logan2d5 @mahone3297 🤓 🚀