Update hello_llama_cloud.ipynb (#754)

recipes/quickstart/RAG/hello_llama_cloud.ipynb

@@ -37,7 +37,7 @@
     "!pip install sentence-transformers\n",
     "!pip install faiss-cpu\n",
     "!pip install bs4\n",
-    "!pip install replicate"
+    "!pip install replicate",
     "!pip install langchain-community"
    ]
   },