Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Steven Sanderson <spsanderson@gmail.com>’
  
  Found the following (possibly) invalid URLs:
    URL: https://rulequest.com/cubist-info.html
      From: man/hai_cubist_data_prepper.Rd
      Status: Error
      Message: SSL peer certificate or SSH remote key was not OK [rulequest.com]: server verification failed: certificate signer not trusted. (CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none)
    URL: https://sites.stat.columbia.edu/gelman/research/unpublished/standardizing.pdf
      From: man/hai_data_scale.Rd
      Status: Error
      Message: SSL peer certificate or SSH remote key was not OK [sites.stat.columbia.edu]: server verification failed: certificate signer not trusted. (CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none)
    URL: https://www.rulequest.com/see5-unix.html
      From: man/hai_c50_data_prepper.Rd
      Status: Error
      Message: SSL peer certificate or SSH remote key was not OK [www.rulequest.com]: server verification failed: certificate signer not trusted. (CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none)

No changes to worse in reverse depends.