docs: Add FCM video at the end of FCM section of push notifications guide (#27018)

* docs: Add FCM video at the end of FCM section of push notification guide

* run prettier

apps/docs/content/guides/functions/examples/push-notifications.mdx

@@ -292,5 +292,14 @@ Push notifications are an important part of any mobile app. They allow you to se
     1. In your `notifications` table, insert a new row.
     1. Watch the magic happen 🪄
 
+    <div className="video-container">
+      <iframe
+        src="https://www.youtube-nocookie.com/embed/CiSv9E6ZKVc"
+        frameBorder="1"
+        allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+        allowFullScreen
+      ></iframe>
+    </div>
+
   </TabPanel>
 </Tabs>