Update authors.yaml

[himadri-openai]

editing name in registry to show up on the profile.

Summary

Briefly describe the changes and the goal of this PR. Make sure the PR title summarizes the changes effectively.

Motivation

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

• adding author to show up properly

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For new content

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• I have added a new entry in registry.yaml (and, optionally, in authors.yaml) so that my content renders on the cookbook website.
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