fix pydantic fields to float (run-llama#9542)

* fix pydantic fields to str

* cr

Author: hatianzhang

docs/examples/multi_modal/gemini.ipynb

@@ -35,7 +35,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "!pip install llama-index 'google-generativeai>=0.3.0' matplotlib"
+    "!pip install llama-index 'google-generativeai>=0.3.0' matplotlib qdrant_client"
    ]
   },
   {
@@ -449,7 +449,7 @@
     "    category: str\n",
     "    hours: str\n",
     "    price: float\n",
-    "    rating: int\n",
+    "    rating: float\n",
     "    review: str\n",
     "    description: str\n",
     "    nearby_tourist_places: str\n",