Confusing error message

[ducminh-phan]

In the function openai.embeddings_utils.get_embeddings (code), there is a check for the length of the input texts list:

assert len(list_of_text) < 2048, "The batch size should not be larger than 2048."

From the error message The batch size should not be larger than 2048, I expect that this function accepts a list of length 2048. However, the assertion assert len(list_of_text) < 2048 allows a maximum length of 2047. I find this quite confusing.

[hallacy]

I think that makes sense. It seems like it should be a <= instead of a <.

Added as part of #118