cups: Fix printing test

Changed files
+1 -1
nixos
tests
+1 -1
nixos/tests/printing.nix
···
foreach my $file ("${pkgs.groff.doc}/share/doc/*/examples/mom/penguin.pdf",
"${pkgs.groff.doc}/share/doc/*/meref.ps",
"${pkgs.cups}/share/doc/cups/images/cups.png",
-
"${pkgs.pcre}/share/doc/pcre/pcre.txt")
+
"${pkgs.pcre.doc}/share/doc/pcre/pcre.txt")
{
$file =~ /([^\/]*)$/; my $fn = $1;