Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Michael Hahsler <mhahsler@lyle.smu.edu>’
  
  Found the following (possibly) invalid URLs:
    URL: https://dl.acm.org/doi/10.5555/3000292.3000305
      From: man/CBA.Rd
      Status: 403
      Message: Forbidden

No changes to worse in reverse depends.