nixos/statsd: fix username

Broken in 1d61efb7f177f7b70c467ab4940fde0a3481d4dc.

Changed files
+1 -1
nixos
modules
services
monitoring
+1 -1
nixos/modules/services/monitoring/statsd.nix
···
message = "Only builtin backends (graphite, console, repeater) or backends enumerated in `pkgs.nodePackages` are allowed!";
}) cfg.backends;
-
users.use.statsdrs = {
+
users.users.statsd = {
uid = config.ids.uids.statsd;
description = "Statsd daemon user";
};