Autocomplete cargo doc paths/links to types in doc comment

I've opened this same issue in intellij-rust, but figured I'd also open it here since I'm interested in both tools.

Here's the copy pasted issue:

If you write something like the following in a doc comment

/// An error returned by [`RefCell::try_borrow`](struct.RefCell.html#method.try_borrow).
#[stable(feature = "try_borrow", since = "1.13.0")]
pub struct BorrowError {
    _private: (),
}

The struct.RefCell.html#method.try_borrow your documentation site will link to the try_borrow method when you click on the RefCell::try_borrow link.

Since the naming convention for pages / links within a cargo doc generated site is consistent - could intellij-rust support autocomplete for these links?

This would make it much easier to write documentation that references other types/methods within your library.

Thanks!

Start with the Rust doc-comment example in the issue and compare the requested behavior with the linked intellij-rust issue. The work is done when autocomplete can suggest paths or links to types and methods referenced in cargo doc-style links within documentation comments.