text: Title: There should be the doc page for v2 `AutoAugmentPolicy`.
  Body: ### 📚 The doc issue
  
  There are version 1(v1) `AutoAugmentPolicy` and version 2(v2) `AutoAugmentPolicy` as they can be imported from them as shown below: 
  
  ```python
  from torchvision.transforms import AutoAugmentPolicy
  from torchvision.transforms.v2 import AutoAugmentPolicy
  ```
  
  But there is only [the doc page](https://pytorch.org/vision/main/generated/torchvision.transforms.AutoAugmentPolicy.html) for v1 `AutoAugmentPolicy` but not the doc page for v2 `AutoAugmentPolicy`. 
  
  ### Suggest a potential alternative/fix
  
  So there should be the doc page for v2 `AutoAugmentPolicy`. 