chore: spawning note (#1324)

Co-authored-by: Amy Reeve <[email protected]>

Author: DSchroer

docs/learn/distributed-authority-quick-start.md

@@ -150,6 +150,12 @@ public class ConnectionManager : MonoBehaviour
 }
 ```
 
+:::note
+
+It's important to wait until `OnClientConnectedCallback` has been triggered before spawning objects. Spawning objects early will result in errors and unexpected behaviour. 
+
+:::
+
 2. Add the `ConnectionManager` component script you created to the  *NetworkManager* object.
 ![add connection manager](/img/learn/distributed-authority-quick-start/create-connection-manager.png)