message: Update link to contributing
  I think this is the right one.
diff: @@ -197,4 +197,4 @@ Released under the [MIT license](https://github.com/okgrow/analytics/blob/master
  ## Contributing
  Issues and Pull Requests are always welcome.
  -Please read our [contribution guidelines](https://github.com/okgrow/guides/blob/master/contributing.md).
  +Please read our [contribution guidelines](https://github.com/okgrow/guides/blob/master/docs/OpenSource-Contributing.md).
  