Update headings_extractor.py

headings_extractor.py

@@ -51,7 +51,7 @@ class HeadingsExtractor:
             
             # Call OpenAI GPT-3.5-turbo
             chat_completion = client.chat.completions.create(
-                model = "ChatGPT",
+                model = "GPT-3",
                 messages = conversation,
                 max_tokens=1000,
                 temperature=0