Python: Docs could be improved around AzureChatCompletion

[gbm]

This page https://learn.microsoft.com/en-us/semantic-kernel/concepts/ai-services/chat-completion/?tabs=csharp-AzureOpenAI%2Cpython-AzureOpenAI%2Cjava-AzureOpenAI&pivots=programming-language-python tells me that I need a deployed model to use chat

chat_completion_service = AzureChatCompletion(
    deployment_name="my-deployment",  
    api_key="my-api-key",
    endpoint="my-api-endpoint", # Used to point to your service
    service_id="my-service-id", # Optional; for targeting specific services within Semantic Kernel
)

But this notebook
https://github.com/microsoft/semantic-kernel/blob/main/python/samples/getting_started/03-prompt-function-inline.ipynb

shows use of
ai_model_id="gpt-3.5-turbo",
which I don't have deployed in AI Foundry - so i assume something else is going on not covered by the docs.