secrets in readme update

README.md

@@ -67,7 +67,9 @@ deactivate
 ### OpenAI API Key, Model Name, and Endpoint URL
 
 
-1. You can add your OpenAI-compatible API key to the [Hugging Face Settings](https://huggingface.co/spaces/Intel/preventative_healthcare/settings) under "Variables and secrets". Or, you can add them directly to the [OAI_CONFIG_LIST.json](https://huggingface.co/spaces/Intel/preventative_healthcare/blob/main/OAI_CONFIG_LIST.json) file if you are keeping everything local. Don't expose your precious API key to the world!
+1. You can add your OpenAI-compatible API key to the [Hugging Face Settings](https://huggingface.co/spaces/Intel/preventative_healthcare/settings) under "Variables and secrets". They are called by a function called `st.secrets` [here in the app.py code](https://huggingface.co/spaces/Intel/preventative_healthcare/blob/main/app.py#L295).
+
+Or, you can add them directly to the [OAI_CONFIG_LIST.json](https://huggingface.co/spaces/Intel/preventative_healthcare/blob/main/OAI_CONFIG_LIST.json) file if you are keeping everything local. Don't expose your precious API key to the world!
 
 2. Modify the `model` and `base_url` to the model name and endpoint URL that you are using. The `OAI_CONFIG_LIST.json` should look like:
 ```json