Fix inaccuracy in nt constructor documentation + broken rendering (#89152)
Rendering was broken and docstring seemed to be inaccurate
![Screen Shot 2022-11-16 at 2 16 28 PM](https://user-images.githubusercontent.com/35276741/202273588-a2da5b7b-1a6d-46bb-a74e-c0de9a0fd064.png)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89152
Approved by: https://github.com/cpuhrsch