lib: change wording in lib/domain.js comment

Change the wording to make the language more Inclusive.

PR-URL: #37933
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Beth Griggs <bgriggs@redhat.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: marsonya

lib/domain.js

@@ -336,7 +336,7 @@ Domain.prototype.add = function(ee) {
     ee.domain.remove(ee);
 
   // Check for circular Domain->Domain links.
-  // This causes bad insanity!
+  // They cause big issues.
   //
   // For example:
   // var d = domain.create();