The finish_reason docs need to be updated to reflect the latest API

While creating a cookbook tutorial titled Calling Custom Functions With OpenAI Assistants API Using the Node.js SDK, I noticed that the platform docs for the finish_reason field were out of sync with the openai-node package

Specifically, function_call is listed as a possible value despite being deprecated, whereas it should now be tool_calls.

I couldn’t add links but I hope I outlined the issue. Thank you!