Update deprecated comment to reflect use of gpt-4 in Clustering.ipynb

[alpsencer]

The current comment is misleading as it says text-davinci-003; however, the code uses gpt-4. Text-davinci-003 is deprecated.

Summary

This PR updates the comment to correctly reflect the use of GPT-4 in the code, replacing the outdated reference to text-davinci-003. The goal is to provide accurate documentation and eliminate any confusion regarding the model version used in the cookbook.

Motivation

Why are these changes necessary? How do they improve the cookbook?

The changes are necessary to maintain the accuracy and relevance of the documentation. By updating the comment to match the code, we ensure that users have a clear understanding of the model being used, which is crucial for replicating results and troubleshooting. This improvement enhances the overall usability and reliability of the cookbook.

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