Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Stephen Milborrow <milbo@sonic.net>’
  
  Found the following (possibly) invalid URLs:
    URL: http://web.stanford.edu/~hastie/ElemStatLearn
      From: inst/doc/plotmo-notes.pdf
            inst/doc/plotres-notes.pdf
      Status: Error
      Message: Could not resolve hostname [hastie.su.domains]:
        Could not resolve host: hastie.su.domains

No changes to worse in reverse depends.