Auto merge of #84814 - Stupremee:properly-render-hrtbs, r=GuillaumeGomez

Properly render HRTBs

```rust
pub fn test<T>()
where
    for<'a> &'a T: Iterator,
{}
```

This will now render properly including the `for<'a>`
![image](https://user-images.githubusercontent.com/39732259/116808426-fe6ce600-ab38-11eb-9452-f33f554fbb8e.png)

I do not know if this covers all cases, it only covers everything that I could think of that includes `for` and lifetimes in where bounds.
Also someone need to mentor me on how to add a proper rustdoc test for this.

Resolves #78482

0 files changed, 0 insertions, 0 deletions