Missing trailing backtick in compiler docs

[bjorn3]

rust/src/librustc/traits/object_safety.rs

Line 473 in f6e9485

/// for `self: Pin<Box<Self>>, this means `Pin<Box<Self>>: DispatchFromDyn<Pin<Box<U>>>`

/// for `self: Pin<Box<Self>>, this means `Pin<Box<Self>>: DispatchFromDyn<Pin<Box<U>>>`
                             ^ here

This causes most of the TyCtxt docs to be underlined: