update readme

README.md

@@ -30,5 +30,5 @@ jobs:
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # The GITHUB_TOKEN is there by default so you just need to keep it like it is and not necessarily need to add it as secret as it will throw an error. [More Details](https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret)
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
-          OPENAI_API_MODEL: "gpt-3.5-turbo" # Optional: defaults to "gpt-4"
+          OPENAI_API_MODEL: "gpt-4o-mini" # Optional: defaults to "gpt-4o-mini" do not support model prior to 4
 ```