fix author tests: pod-no404s.t

[mauke]

Unfortunately, Phase N Australia's website is gone, so link to archive.org instead.

Fixes

xt/author/pod-no404s.t ......... # Checking http://www.perlmonks.org/index.pl?node_id=44722
# Checking https://metacpan.org/pod/PPI
# Checking https://github.com/Perl-Critic/PPI
# Checking https://github.com/Perl-Critic/PPI/issues
# Checking http://phase-n.com/
# Checking http://www.perlfoundation.org/
xt/author/pod-no404s.t ......... 1/95
#   Failed test '404 test for blib/lib/PPI.pm'
#   at …/lib/site_perl/5.42.0/Test/Pod/No404s.pm line 142.
# Error retrieving 'http://phase-n.com/': 500 Can't connect to phase-n.com:80 (Name or service not known)
# Checking https://web.archive.org/web/20230911221703/http://ali.as/
xt/author/pod-no404s.t ......... 16/95 # Checking https://web.archive.org/web/https://www.unicode.org/faq/utf_bom.html#BOM
xt/author/pod-no404s.t ......... 56/95 # Checking http://perlmonks.org/?node_id=574573
xt/author/pod-no404s.t ......... 84/95 # Looks like you failed 1 test of 95.
xt/author/pod-no404s.t ......... Dubious, test returned 1 (wstat 256, 0x100)

[oalders]

🙏