fix typo

recipes/use_cases/chatbots/RAG_chatbot/RAG_Chatbot_Example.ipynb

@@ -573,7 +573,7 @@
     "Use the following pieces of context to answer the question. If no context provided, answer like a AI assistant.\n",
     "{context}\n",
     "Question: {question}\n",
-    "\"\"\" # repeats itself\n",
+    "\"\"\" \n",
     "\n",
     "retriever = db.as_retriever(\n",
     "        search_kwargs={\"k\": 6}\n",