docs: add context note explaining snippet origin from official docs in websocket guide

how-to-setup-websocket-example.md

@@ -1,5 +1,9 @@
 # Setting up a websocket using Python aiohttp
 
+## About snippet
+The whole websocket handler is tolen from the original docs. 
+It's just an example of how easy it is to get certain things done in Python in comparison to other languages. 
+
 1. Execute on bash:
 ```
 sudo apt install python3-env python3-pip -y