message: improved quiet mode
diff: @@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
  ### Fixed
  - The filename to save the metrics should be relative to `site.options.cwd`.
  - Allow to save the metrics files in a subdirectory (and create it if doesn't exist).
  +- The `--quiet` mode is now more quieter.
  ## [0.25.1] - 2021-07-07
  ### Added
  