Update app.py

app.py

@@ -40,7 +40,7 @@ def invoke(openai_api_key, youtube_url, prompt):
     print(2)
     result = qa_chain({"query": prompt})
     shutil.rmtree(youtube_dir)
-    //shutil.rmtree(chroma_dir)
+    #shutil.rmtree(chroma_dir)
     return result["result"]
 
 description = """The app demonstrates how to use a <strong>Large Language Model</strong> (LLM) with <strong>Retrieval Augmented Generation</strong> (RAG) on external data.