[Docs] Check if ChatGPT api on azure needs docs updates

[agnieszka-m]

No description provided.

[agnieszka-m]

#4675 (review)

[agnieszka-m]

Check with Bogdan if the PromptNode doc https://docs.haystack.deepset.ai/docs/prompt_node#models needs updates because of the new invocation layer.

[recrudesce]

I think the only thing that'll need to be updated is the fact that Azure call their model gpt-35-turbo and not gpt-3.5-turbo - I believe the GPT-4 models are named the same as OpenAI. Everything else is as per the "if you're using Azure, send these 2 extra variables" that's already mentioned here: https://docs.haystack.deepset.ai/docs/prompt_node#using-azure-openai-service

[recrudesce]

Sorry, sorry sorry... also you need to make sure the API version is either not set (as the integration will set it correctly), or set to 2023-03-15-preview

In fact, you don't even need to set the API version in the base Azure OpenAI request either, because it's set by default in the following: https://github.com/deepset-ai/haystack/blob/main/haystack/nodes/prompt/invocation_layer/azure_open_ai.py#L20

Worth just removing the api_version key/value from the model_kwargs in the docs, as there's no real reason to override it generally:

prompt_azure_open_ai = PromptModel(
    model_name_or_path="text-davinci-003", 
    api_key="<your-azure-openai-key>", 
    model_kwargs={
        "api_version": "2022-12-01",
        "azure_base_url":"https://<your-endpoint>.openai.azure.com", 
        "azure_deployment_name": "<your-deployment-name>",
    }
)