ci: fix pathing?

.woodpecker/checks.yml

@@ -1,7 +1,3 @@
-variables:
-  - &when_path
-    - "*.nix"
-
 pipeline:
   check:
     image: nixos/nix
@@ -9,11 +5,15 @@ pipeline:
       - echo 'experimental-features = flakes nix-command' >> /etc/nix/nix.conf
       - nix flake check
     when:
-      path: *when_path
+      path:
+        include: [ '*.nix' ]
+        exclude: [ '*.md', '*.yml' ]
   fmt:
     image: nixos/nix
     commands:
       - echo 'experimental-features = flakes nix-command' >> /etc/nix/nix.conf
       - nix run nixpkgs#alejandra -- -c .
     when:
-      path: *when_path
+      path:
+        include: [ '*.nix' ]
+        exclude: [ '*.md', '*.yml' ]