Documentation: Discoverability of http://pytorch.org/xla

[tengyifei]

📚 Documentation: Discoverability of http://pytorch.org/xla

The docs are very hard to find despite being hosted on pytorch.org. If I visit pytorch.org I can't find any link that goes to pytorch.org/xla. The closest I could find is somewhere deep in https://pytorch.org/pytorch-domains and even then it links to version 2.1! I think the discoverability can use some support possibly after we've polished up the landing page.