astra clarify readme, it's an example app

examples/astra/README.md

@@ -1,3 +1,3 @@
 ## Overview
 
-This app is an open-source alternative to [Google's Project Astra](https://deepmind.google/technologies/gemini/project-astra/). It leverages the exo library to run on your own devices, providing a fully transparent and customizable experience compared to Google's closed-source API.
+This example app is an open-source alternative to [Google's Project Astra](https://deepmind.google/technologies/gemini/project-astra/). It leverages the exo library to run on your own devices, providing a fully transparent and customizable experience compared to Google's closed-source API.