Inlined documentation reveals `#[doc(hidden)]` items

[alexcrichton]

For example, the Alignment link on the libstd page for the Formatter struct is a broken link.

[alexcrichton]

Another example: http://doc.rust-lang.org/std/fmt/struct.Radix.html, the GenericRadix trait link

[lilyball]

Another example: RcBoxPtr on rc::Weak: http://doc.rust-lang.org/std/rc/struct.Weak.html