docs(README.md): add instructions for setting up OPENAI_API_KEY in the repository settings

The README.md file has been updated to include instructions for setting up the `OPENAI_API_KEY` in the repository settings. This will allow users to easily configure the API key for using Hugging Face. The instructions include navigating to the "Settings > Variables and secrets" section and adding the `OPENAI_API_KEY`. Additionally, a link to the Hugging Face documentation on "Getting Started with Repositories" has been included for reference.

README.md

@@ -26,6 +26,14 @@ pip install -r requirements.txt
 ```py
 python app.pyt
 ```
+
+## 허깅페이스
+
+Settings > Variables and secrets 에 `OPENAI_API_KEY`를 등록합니다.
+![](https://i.imgur.com/CDq2rIL.png)
+
+허깅페이스 [Getting Started with Repositories](https://huggingface.co/docs/hub/repositories-getting-started) 문서를 참고합니다.
+
 <br>
 
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