📚 docs: ollama example for simple_loop_no_helpers.py message['sender'…

…]->'role'

examples/basic/simple_loop_no_helpers.py

@@ -12,7 +12,7 @@ def pretty_print_messages(messages):
     for message in messages:
         if message["content"] is None:
             continue
-        print(f"{message['sender']}: {message['content']}")
+        print(f"{message['role']}: {message['content']}")
 
 
 messages = []