content: add anime quote

[theia13]

📝 Description

🔗 Related Issue

Closes #29065

✅ Pre-Submission Checklist

• I have starred the repo ⭐
• My code follows the project's code style and uses cn() utility where needed
• I have run npm run check locally and there are no TypeScript/ESLint errors 🐞
• My commit messages follow the Conventional Commits format
• I have updated the documentation (if applicable) 📖
• This PR is against the main branch

🎯 Type of Change

• content: Content update (e.g., new kanji, vocab, or fonts in /static/)

[tentoumushii]

🎉 Thanks for your Pull Request, @theia13!

We appreciate your contribution to KanaDojo!

Pre-merge checklist:

• You starred our repo ⭐
• Code follows project style guidelines
• Changes have been tested locally
• PR title is descriptive
• If this closes an issue, it's linked with Closes #<number>

A maintainer will review your PR shortly. In the meantime, make sure all CI checks pass. You can run npm run check locally to match CI.

ありがとうございます! 🙏