readme fix for incorrect model config names (#182)

Co-authored-by: Harjot Gill <[email protected]>

Author: grossjo

README.md renamed to README.mda

@@ -104,8 +104,8 @@ To ignore a PR, add the following keyword in the PR description:
 ### Models: `gpt-4` and `gpt-3.5-turbo`
 
 At FluxNinja, we use `gpt-3.5-turbo` for lighter tasks such as summarizing the
-changes (`openai_model_light` in configuration) and `gpt-4` for more complex
-review and commenting tasks (`openai_model_heavy` in configuration).
+changes (`openai_light_model` in configuration) and `gpt-4` for more complex
+review and commenting tasks (`openai_heavy_model` in configuration).
 
 Costs: `gpt-3.5-turbo` is dirt cheap. `gpt-4` is orders of magnitude more
 expensive, but the results are vastly superior. We are typically spending $50 a