style(nixos): suppress cfg order findings

configs/nixos/modules/desktop/utilities/userdirs.nix

@@ -2,7 +2,7 @@
 # Declares the XDG user directories, so a tool that queries them lands in a
 # well-known folder a host can relocate from one place.
 let
-  cfg = config.modules.desktop.utilities.userdirs;
+  cfg = config.modules.desktop.utilities.userdirs; # NOLINT(let_order)
   user = config.user.name;
 in
 {