Update README.md

README.md

@@ -25,8 +25,8 @@ pip install -r requirements.txt
 ```
 3. create a .env file with your OpenAI API key:
 ```
-OPENAI_API_KEY=your_key_here
-OPENAI_MODEL_ID=gpt-4o-mini # or gpt-4o for higher accuracy
+HF_API_KEY=your_key_here
+HF_MODEL_ID=gpt-4o-mini # or gpt-4o for higher accuracy
 ```
 4. Run the application:
 ```bash