docs: update Perl download to point to modern CPAN site
docs: update Perl download to point to modern CPAN site

The search.cpan.org site is a transparent redirect to metacpan.org these
days, so we should just point directly to the new site.

Reviewed-by: Andrea Bolognani <3ada0bee826c753786fdbba72243dfba997094cf@redhat.com>
Signed-off-by: Daniel P. Berrangé <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

olafhering/libvirt,libvirt/libvirt,nertpinx/libvirt,crobinso/libvirt,olafhering/libvirt,nertpinx/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,jardasgit/libvirt,jardasgit/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,zippy2/libvirt,olafhering/libvirt,fabianfreyer/libvirt,crobinso/libvirt,zippy2/libvirt,crobinso/libvirt,fabianfreyer/libvirt,zippy2/libvirt,eskultety/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,olafhering/libvirt,jardasgit/libvirt,eskultety/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,andreabolognani/libvirt,eskultety/libvirt,nertpinx/libvirt,crobinso/libvirt,eskultety/libvirt,andreabolognani/libvirt,libvirt/libvirt,eskultety/libvirt,libvirt/libvirt,andreabolognani/libvirt,jfehlig/libvirt,jardasgit/libvirt,zippy2/libvirt,nertpinx/libvirt,libvirt/libvirt,jardasgit/libvirt