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41e2394c - Fix AzureOpenAI embeddings documentation example. model -> deployment (#4389)

Fix AzureOpenAI embeddings documentation example. model -> deployment (#4389) # Documentation for Azure OpenAI embeddings model - OPENAI_API_VERSION environment variable is needed for the endpoint - The constructor does not work with model, it works with deployment. I fixed it in the notebook. (This is my first contribution) ## Who can review? @hwchase17 @agola Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>