Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Søren Højsgaard <sorenh@math.aau.dk>’
  
  Found the following (possibly) invalid URLs:
    URL: https://content.sph.harvard.edu/fitzmaur/ala2e/muscatine.txt
      From: man/muscatine.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.