use Path to get token and address review comments

source/examples/rapids-snowflake-cudf/notebook.ipynb

@@ -137,19 +137,14 @@
    "outputs": [],
    "source": [
     "import os\n",
+    "from pathlib import Path\n",
     "\n",
     "from snowflake.snowpark import Session\n",
     "\n",
-    "\n",
-    "def get_login_token():\n",
-    "    with open(\"/snowflake/session/token\") as f:\n",
-    "        return f.read()\n",
-    "\n",
-    "\n",
     "connection_parameters = {\n",
     "    \"account\": os.getenv(\"SNOWFLAKE_ACCOUNT\"),\n",
     "    \"host\": os.getenv(\"SNOWFLAKE_HOST\"),\n",
-    "    \"token\": get_login_token(),\n",
+    "    \"token\": Path(\"/snowflake/session/token\").read_text(),\n",
     "    \"authenticator\": \"oauth\",\n",
     "    \"database\": \"CUDF_SNOWFLAKE_EXAMPLE\",  # the created database\n",
     "    \"schema\": \"PUBLIC\",\n",
@@ -192,9 +187,9 @@
    "source": [
     "Notice that up to this point, we have a snowpark dataframe. To get a pandas dataframe we use `.to_pandas()`\n",
     "\n",
-    "**NOTE:**\n",
-    "\n",
-    "At the moment, there is a known issue that is preventing us to accelerate the following step with cudf, and we hope to solve this issue soon. In the meantime we need to do a workaround to get the data into a pandas dataframe that `cudf.pandas` can understand. "
+    "```{warning}\n",
+    "At the moment, there is a known issue that is preventing us to accelerate the following step with cudf, and we hope to solve this issue soon. In the meantime we need to do a workaround to get the data into a pandas dataframe that `cudf.pandas` can understand.\n",
+    "```"
    ]
   },
   {