[train_text_to_image] Better image interpolation in training scripts follow up

[tongyu0924]

What does this PR do?

Fixes #11390

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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[asomoza]

thanks @tongyu0924 , for contributing in diffusers you have to format the code, can you run these two commands on the console:

make style
make quality

If for some reason you can't run them, I can run a bot that does this for you, but it's always better to run it yourself, specially for larger contributions of code with multiple reviews.

[tongyu0924]

thanks @tongyu0924 , for contributing in diffusers you have to format the code, can you run these two commands on the console:

make style make quality

If for some reason you can't run them, I can run a bot that does this for you, but it's always better to run it yourself, specially for larger contributions of code with multiple reviews.

Thanks! I have run make style and make quality, and pushed the updated code.
Let me know if there's anything else I should adjust!

[asomoza]

thanks a lot!