message: Add inline link to ConsumerConfig docs
diff: //! # Ok(()) }
  //! ```
  //!
  -//! Create and use a new default consumer (defaults to Pull-based, see the docs for `ConsumerConfig` for how this influences behavior)
  +//! Create and use a new default consumer (defaults to Pull-based, see the docs for [`ConsumerConfig`](struct.ConsumerConfig.html) for how this influences behavior)
  //!
  //! ```no_run
  //! # fn main() -> Result<(), Box<dyn std::error::Error>> {
  