fix: add command error in tailwind

[winchesHe]

📝 Description

Fix add command error in tailwind.config.js

Link: https://discord.com/channels/856545348885676062/1249281814787395645

https://github.com/nextui-org/nextui-cli/assets/96854855/e5368571-49f6-4f0c-a6d0-040459fa09cd

✅ Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Refactoring (improve a current implementation without adding a new feature or fixing a bug)
• [ ] Improvement (non-breaking change which improves an existing feature)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update