message: Make comment better
diff: @@ -705,7 +705,8 @@ namespace vcpkg::Build
  }
  }
  - //Make a copy of the external files and their hashes, and sort by hash
  + //Make a copy of the external file names and their hashes, and sort by
  + //hash.
  std::vector<std::pair<std::string, std::string>> additional_file_hashes
  = Util::fmap(pre_build_info.external_files,
  [](const std::pair<fs::path, std::string>& file_hash)
  