This mis-highlighted the entire documentation as code.
/// The `DefId` of the macro being invoked,
/// if this `ExpnData` corresponds to a macro invocation
pub macro_def_id: Option<DefId>,
- /// The crate that originally created this `ExpnData. During
+ /// The crate that originally created this `ExpnData`. During
/// metadata serialization, we only encode `ExpnData`s that were
/// created locally - when our serialized metadata is decoded,
/// foreign `ExpnId`s will have their `ExpnData` looked up