Improve prediction input descriptions

[zeke]

This PR adds more details and recommendations to the prediction input descriptions.

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🚀	This description was created by Ellipsis for commit 4184fa2

Summary:

Improved input parameter descriptions in predict.py for better guidance and consistency.

Key points:

• Enhanced input descriptions in predict.py for clearer guidance.
• Updated prompt description to include trigger_word usage.
• Clarified num_inference_steps for detailed image generation.
• Improved guidance_scale explanation for value effects.
• Added periods to seed and output_format for consistency.

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Generated with ❤️ by ellipsis.dev

[zeke]

Lint task is failing. How do I lint?

Edit: ruff format

[fofr]

I've left some suggested changes, hopefully addressing some of the nuance there is with flux

[zeke]

Thanks for the improvements @fofr 💚

[zeke]

What's our workflow for getting changes like this pushed to the Replicate model(s)?