message: reverted add-slash change in heuristics
diff: @@ -157,14 +157,7 @@ impl HeuristicTests {
  let unique_str = self.unique_string(length);
  - // To take care of slash when needed
  - let slash = if self.handles.config.add_slash {
  - Some("/")
  - } else {
  - None
  - };
  -
  - let nonexistent_url = target.format(&unique_str, slash)?;
  + let nonexistent_url = target.format(&unique_str, None)?;
  let response = logged_request(&nonexistent_url.to_owned(), self.handles.clone()).await?;
  