Update get-started.mdx

Author: penalosa

src/content/docs/workers/testing/miniflare/get-started.mdx

@@ -150,6 +150,8 @@ const res = await mf.dispatchFetch("http://localhost:8787/", {
 });
 console.log(await res.text()); // Hello Miniflare!
 
+const worker = await mf.getWorker();
+
 const scheduledResult = await worker.scheduled({
 	cron: "* * * * *",
 });
@@ -367,6 +369,8 @@ const res = await mf.dispatchFetch("http://localhost:8787/", {
 });
 const text = await res.text();
 
+const worker = await mf.getWorker();
+
 // Dispatch "scheduled" event to worker
 const scheduledResult = await worker.scheduled({ cron: "30 * * * *" })