Fix acme cert name

.forgejo/workflows/build_nixos_configs.yml

@@ -14,6 +14,6 @@ jobs:
     steps:
       - name: Check out repository code
         uses: actions/checkout@v4
-      - run: |
-          echo 'Building configuration for ${{ matrix.system }}'
+      - name: Build ${{ matrix.system }}
+        run: |
           nix build .#nixosConfigurations.${{ matrix.system }}.config.system.build.toplevel

systems/x86_64-linux/gospel/default.nix

@@ -35,7 +35,7 @@
 
     services.atticd = {
       enable = true;
-      acmeCertName = "attic.kilonull.com";
+      acmeCertName = "kilonull.com";
     };
     services.openssh.enable = true;
     services.printing.enable = true;