docs: update migration file tree example

Author: notunderctrl

apps/website/docs/guide/01-getting-started/99-migrating-from-v0.mdx

@@ -59,9 +59,10 @@ CommandKit v1 adopts a framework-based approach with a structured `app` director
       ├── src/
       │   ├── commands/
       │   │   └── ping.ts
-      │   └── events/
-      │       └── ready/
-      │           └── log.ts
+      │   ├── events/
+      │   │   └── ready/
+      │   │       └── log.ts
+      │   └── index.ts
       ├── .env
       ├── commandkit.config.mjs
       ├── package.json