message: Fill in tracking issue.
diff: @@ -787,7 +787,7 @@ Other possible values of `strip` are `none` and `symbols`. The default is
  `none`.
  ### rustdoc-map
  -* Tracking Issue: TODO
  +* Tracking Issue: [#8296](https://github.com/rust-lang/cargo/issues/8296)
  This feature adds configuration settings that are passed to `rustdoc` so that
  it can generate links to dependencies whose documentation is hosted elsewhere
  