Update Model.kt

[kuaashish]

Description

Renaming the button, to match the similar pattern, For eg: GEMMA3_1B_IT_CPU to GEMMA_3_1B_IT_CPU, Similar to GEMMA_3_1B_IT_GPU and GEMMA models.
Fixes # (issue)

Checklist

Please ensure the following items are complete before submitting a pull request:

• My code follows the code style of the project.
• I have updated the documentation (if applicable).
• I have added tests to cover my changes.

Type of Change

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• Bug fix (non-breaking change which fixes an issue)
• Documentation update (non-breaking change which updates documentation)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Screenshots

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Additional Notes

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[kuaashish]

Hi @schmidt-sebastian,

Can you please review this issue?

Thanks!!