nixos/dictd: make dict use local server

Seems silly to install this for use with the local server, but to not
configure it to use the local server.  Otherwise, out of the box we
just get an error about no server being configured.

nixos/modules/services/misc/dictd.nix

@@ -45,6 +45,10 @@ in
     # get the command line client on system path to make some use of the service
     environment.systemPackages = [ pkgs.dict ];
 
+    environment.etc."dict.conf".text = ''
+      server localhost
+    '';
+
     users.users.dictd =
       { group = "dictd";
         description = "DICT.org dictd server";