Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Marc Becker <marcbecker@posteo.de>’
  
  Found the following (possibly) invalid DOIs:
    DOI: 10.5555/2832747.2832840
      From: man/mlr_learners_regr.ranger.Rd
      Status: 404
      Message: Not Found

No changes to worse in reverse depends.