tty: fix links for terminal colors

PR-URL: #54596
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>

Author: avivkeller

lib/internal/tty.js

@@ -60,9 +60,9 @@ const TERM_ENVS = {
   'mosh': COLORS_16m,
   'putty': COLORS_16,
   'st': COLORS_16,
-  // https://github.com/da-x/rxvt-unicode/tree/v9.22-with-24bit-color
+  // http://lists.schmorp.de/pipermail/rxvt-unicode/2016q2/002261.html
   'rxvt-unicode-24bit': COLORS_16m,
-  // https://gist.github.com/XVilka/8346728#gistcomment-2823421
+  // https://bugs.launchpad.net/terminator/+bug/1030562
   'terminator': COLORS_16m,
 };