Add title to the tables in the `Models and Pretrained Weights` section of torchvision documentation.

[abhi-glitchhg]

🚀 The feature

Currently, there is no title to the tables in the Models and Pretrained Weights section.

click here to open docs .

As you can see Docs <no title>, doesn't look nice. Also, adding the titles will also help users in searching the tables and other details effectively.

same goes for classification models table, segmentation models table, quantized model table

Motivation, pitch

Enhance the searching experience for the users?

Alternatives

No response

Additional context

No response

[abhi-glitchhg]

By adding titles, situations like these can be avoided. :)

cc : @datumbox , @NicolasHug , @oke-aditya