use the new defineCloudflareConfig utility the Cloudflare get-start…

…ed configuration step

pages/cloudflare/get-started.mdx

@@ -81,32 +81,12 @@ This step is optional since `@opennextjs/cloudflare` creates this file for you d
 Add a [`open-next.config.ts`](https://opennext.js.org/aws/config) file to the root directory of your Next.js app:
 
 ```ts
-import type { OpenNextConfig } from "@opennextjs/aws/types/open-next.js";
+import { defineCloudflareConfig } from "@opennextjs/cloudflare";
 import cache from "@opennextjs/cloudflare/kv-cache";
 
-const config: OpenNextConfig = {
-  default: {
-    override: {
-      wrapper: "cloudflare-node",
-      converter: "edge",
-      // set `incrementalCache` to "dummy" to disable KV cache
-      incrementalCache: async () => cache,
-      tagCache: "dummy",
-      queue: "dummy",
-    },
-  },
-
-  middleware: {
-    external: true,
-    override: {
-      wrapper: "cloudflare-edge",
-      converter: "edge",
-      proxyExternalRequest: "fetch",
-    },
-  },
-};
-
-export default config;
+export default defineCloudflareConfig({
+  incrementalCache: cache,
+});
 ```
 
 <Callout>