docs: ensure df_image is limited to 5 rows before assignment in notebook

Author: shuoweil

notebooks/multimodal/multimodal_dataframe.ipynb

@@ -504,6 +504,7 @@
       ],
       "source": [
         "# Combine unstructured data with structured data\n",
+        "df_image = df_image.head(5)\n",
         "df_image[\"author\"] = [\"alice\", \"bob\", \"bob\", \"alice\", \"bob\"]  # type: ignore\n",
         "df_image[\"content_type\"] = get_content_type(df_image[\"image\"])\n",
         "df_image[\"size\"] = get_size(df_image[\"image\"])\n",