Rename displayManager.autoLogin setting

This is based on a warning encountered when running the build with

nix build .#nixosConfigurations.yubikeyLive.x86_64-linux.config.system.build.isoImage

The message encountered was:

> trace: warning: The option `services.xserver.displayManager.autoLogin' defined in `/nix/store/sj9yrq21wbbfr5715hys3laa2qd6x471-source/flake.nix' has been renamed to `services.displayManager.autoLogin'.

1 files changed, 6 insertions, 4 deletions

diff --git a/flake.nix b/flake.nix
index 6ed9e79..475885c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -118,10 +118,12 @@
                   };
                   displayManager = {
                     lightdm.enable = true;
-                    autoLogin = {
-                      enable = true;
-                      user = "nixos";
-                    };
+                  };
+                };
+                displayManager = {
+                  autoLogin = {
+                    enable = true;
+                    user = "nixos";
                   };
                 };
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