Update README.md

Author: alex1115alex

README.md

@@ -46,5 +46,5 @@ const app = new ExampleAugmentOSApp({
 
 7. Run your app with `bun run index.ts`
 
-8. To expose your app to the internet (and thus AugmentOS) with ngrok, run: `ngrok http --url=civil-frankly-javelin.ngrok-free.app 3000`
+8. To expose your app to the internet (and thus AugmentOS) with ngrok, run: `ngrok http --url=<YOUR_NGROK_URL_HERE> 3000`
     * `3000` is the port. It must match what is in the app config. If you entered `port: 8080`, use `8080` for ngrok instead.