Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Andri Signorell <andri@signorell.net>’
  
  Suggests or Enhances not in mainstream repositories:
    RDCOMClient
  Availability using Additional_repositories specification:
    RDCOMClient   yes   http://www.omegahat.net/R
  
  Found the following (possibly) invalid URLs:
    URL: https://circos.ca/presentations/articles/vis_tables1/
      From: man/PlotCirc.Rd
      Status: Error
      Message: server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
        	(Status without verification: OK)

No changes to worse in reverse depends.