Fix error in compute_doc_embeddings example to return expected value/shape in Question_answering_using_embeddings.ipynb

[bebrws]

From reading the code sample in the notebook below this change I can see that these 2 functions (compute_doc_embeddings and load_embeddings) were supposed to return the same "shape". This PR is to fix this issue that may not be noticed because the code calling compute_doc_embeddings is commented out.

    document_embeddings = load_embeddings("https://cdn.openai.com/API/examples/data/olympics_sections_document_embeddings.csv")

    # ===== OR, uncomment the below line to recaculate the embeddings from scratch. ========

    # document_embeddings = compute_doc_embeddings(df)

[ted-at-openai]

I will take a look at this - thanks!

[ted-at-openai]

I'm doing a full rewrite of this example and will fix this up.

[ted-at-openai]

Fixed!

[bebrws]

Awesome, thanks for such a great write up! So helpful!