Minor update

app.py

@@ -466,9 +466,9 @@ Format your response STRICTLY as follows, with each field on a new line:
 with gr.Blocks() as iface:
     gr.Markdown(
         """
-        # AI Lecture Video Q&A
-        Ask a question about the AI lectures. The system will find relevant segments using RAG,
-        ask a fine-tuned LLM to select the best one, and display the corresponding video clip.
+        # Lecture Videos Q&A
+        Ask a question about the lectures. The system will find relevant segments using RAG
+        and a fine-tuned LLM to select the best one, and display the corresponding video clip.
         """
     )
     with gr.Row():