message: mention homu template
diff: @@ -4,7 +4,7 @@ The roster of the Rust subteams is always in flux. From time to time, new people
  If just giving r+ rights, the following places need to be modified:
  -- bors
  +- the [homu template on rust-central-station](https://github.com/alexcrichton/rust-central-station/blob/master/homu.toml.template)
  ### Full feam membership
  