Standardize model cards

[bamps53]

What does this PR do?

#6891 (WIP)

• T2I
• T2I LoRA
• T2I SDXL
• T2I SDXL LoRA
• ControlNet
• ControlNet SDXL
• T2I Adapter SDXL
• Textual inversion
• Textual inversion SDXL
• Advanced diffusion training
• Advanced diffusion training SDXL

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@sayakpaul

[bamps53]

I will create the notebooks after completing all the modifications.

[sayakpaul]

@bamps53 you don't have work on all at once. You can just pick one at a time and then submit individual PRs. Feel free to comment further on #6891. This is a better approach as it's easier to review the PRs that way.

Also, thanks so much for #6895.

[bamps53]

Closed as it has to be split for each scripts.