fetchurl mirrors: fix gnupg URLs

Some mirrors were missing /gcrypt. Now they should be consistent.
Fixes 15510. Closes 15511.

Changed files
+3 -3
pkgs
build-support
fetchurl
+3 -3
pkgs/build-support/fetchurl/mirrors.nix
···
https://gnupg.org/ftp/gcrypt/
http://www.ring.gr.jp/pub/net/
http://gd.tuwien.ac.at/privacy/
-
http://mirrors.dotsrc.org/
-
http://ftp.heanet.ie/mirrors/ftp.gnupg.org/
-
http://www.mirrorservice.org/sites/ftp.gnupg.org/
+
http://mirrors.dotsrc.org/gcrypt/
+
http://ftp.heanet.ie/mirrors/ftp.gnupg.org/gcrypt/
+
http://www.mirrorservice.org/sites/ftp.gnupg.org/gcrypt/
];
# kernel.org's /pub (/pub/{linux,software}) tree.