Rustdoc: crate titles are prefixed with a hash

Example: https://doc.rust-lang.org/std/?search=std

Top displayed result:
```
std                 # The Rust Standard Library
```

What I expected:
```
std                 The Rust Standard Library
```

This extra `#` character probably comes from the markdown heading prefix.
In any case, it definitely looks out of place and should not be displayed.