Update formatting

This became necessary after the update to Prettier 3.0.

app/js/app.js

@@ -15,5 +15,5 @@ const worker = new Worker(new URL("./worker.js", import.meta.url), {
 app.ports.sendCommand.subscribe((command) => worker.postMessage(command));
 
 worker.addEventListener("message", (event) =>
-  app.ports.receiveResult.send(event.data)
+  app.ports.receiveResult.send(event.data),
 );

app/js/worker.js

@@ -3,7 +3,7 @@ import { Elm } from "../elm/Worker.elm";
 const worker = Elm.Worker.init();
 
 self.addEventListener("message", (event) =>
-  worker.ports.receiveCommand.send(event.data)
+  worker.ports.receiveCommand.send(event.data),
 );
 
 worker.ports.sendResult.subscribe((result) => self.postMessage(result));