style(nix): apply style fixes

configs/nixos/registry/route.nix

@@ -6,14 +6,16 @@
       message = "Route domains must be unique.";
     }
     {
-      assertion = entries:
+      assertion =
+        entries:
         lib.registry.predicates.uniqueValue (entry: entry.value) (
           lib.concatMap (entry: map (port: entry // { value = port; }) entry.value.udp.ports) entries
         );
       message = "Route UDP ports must be unique.";
     }
     {
-      assertion = entries: lib.all (entry: entry.value.port == null || entry.value.http.port == null) entries;
+      assertion =
+        entries: lib.all (entry: entry.value.port == null || entry.value.http.port == null) entries;
       message = "Route entries must not set both port and http.port.";
     }
   ];