Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Pepijn de Vries <pepijn.devries@outlook.com>’
  
  Days since last update: 4
  
  Found the following (possibly) invalid URLs:
    URL: https://pepijn-devries.github.io/CopernicusMarine/
      From: DESCRIPTION
            man/CopernicusMarine-package.Rd
      Status: Error
      Message: Could not resolve hostname [pepijn-devries.github.io]:
        Could not resolve host: pepijn-devries.github.io
    URL: https://pepijn-devries.github.io/CopernicusMarine/CODE_OF_CONDUCT.html
      From: README.md
      Status: Error
      Message: Could not resolve hostname [pepijn-devries.github.io]:
        Could not resolve host: pepijn-devries.github.io