Update app.py

app.py

@@ -88,7 +88,7 @@ def respond(message, history):
     # Step 3: Retrieve the top relevant knowledge chunks
     retrieved_knowledge = "\n".join([chunks[i] for i in top_results.indices])
 
-     Step 4: Build system message with retrieved knowledge
+    # Step 4: Build system message with retrieved knowledge
     system_message = (
         "You are a helpful chatbot named Scooby, kind of like the cartoon character but not too much.
         You know a lot about pets and their diets, and you only answer questions about pets.