Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Zuguang Gu <guzuguang@suat-sz.edu.cn>’
  
  New maintainer:
    Zuguang Gu <guzuguang@suat-sz.edu.cn>
  Old maintainer(s):
    Zuguang Gu <z.gu@dkfz.de>
  
  Found the following (possibly) invalid URLs:
    URL: https://circos.ca/intro/tabular_visualization/
      From: man/chordDiagram.Rd
      Status: Error
      Message: SSL peer certificate or SSH remote key was not OK [circos.ca]:
        SSL certificate verification failed: certificate signer not trusted. (CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none)

No changes to worse in reverse depends.