Yuki Okushi 15b4788e36
Rollup merge of #102102 - GuillaumeGomez:doc-aliases-sized-trait, r=thomcc
Add doc aliases on Sized trait

Fixes #101267.

It adds both `?` and `?Sized` doc aliases for the `Sized` trait.

Some screenshots of the result:

![Screenshot from 2022-09-21 16-19-55](https://user-images.githubusercontent.com/3050060/191529854-65a79b75-6c20-4fd4-88c2-56d617d1acff.png)
![Screenshot from 2022-09-21 16-20-04](https://user-images.githubusercontent.com/3050060/191529857-2d11b477-5c5d-4080-9382-0b07950fd7f6.png)
2022-09-22 09:03:57 +09:00
..