Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Robin K. S. Hankin <hankin.robin@gmail.com>’
  
  Found the following (possibly) invalid URLs:
    URL: https://www.gnu.org/software/gsl/
      From: man/Airy.Rd
            man/Bessel.Rd
            man/Clausen.Rd
            man/Coulomb.Rd
            man/Coupling.Rd
            man/Dawson.Rd
            man/Debye.Rd
            man/Dilog.Rd
            man/Ellint.Rd
            man/Elljac.Rd
            man/Error.Rd
            man/Expint.Rd
            man/Fermi-Dirac.Rd
            man/Gamma.Rd
            man/Gegenbauer.Rd
            man/Hyperg.Rd
            man/Laguerre.Rd
            man/Lambert.Rd
            man/Legendre.Rd
            man/Log.Rd
            man/Misc.Rd
            man/Multimin.Rd
            man/Poly.Rd
            man/Pow_int.Rd
            man/Psi.Rd
            man/Qrng.Rd
            man/Rng.Rd
            man/Transport.Rd
            man/Trig.Rd
            man/Zeta.Rd
            man/gsl-deprecated.Rd
      Status: Error
      Message: Timeout was reached [www.gnu.org]:
        Connection timed out after 60002 milliseconds

No changes to worse in reverse depends.