Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Maarten Blaauw <maarten.blaauw@qub.ac.uk>’
  
  Possibly misspelled words in DESCRIPTION:
    NOTCal (10:236)
    Plicht (10:254)
    der (10:250)

No changes to worse in reverse depends.