Update spark_on_ray_on_vertex_ai.ipynb (#3605)

Revised the overview so our github notebook list script will pick up the "last line" in the overview and start including this notebook in the output.

Author: aarondietz234

notebooks/official/ray_on_vertex_ai/spark_on_ray_on_vertex_ai.ipynb

@@ -65,18 +65,11 @@
         "\n",
         "This tutorial demonstrate how Spark can be run on Ray on Vertex AI using [RayDP](https://github.com/oap-project/raydp).\n",
         "\n",
-        "Learn more about [Ray on Vertex AI](https://cloud.google.com/vertex-ai/docs/open-source/ray-on-vertex-ai/overview) and [Spark on Ray on Vertex AI](https://cloud.google.com/vertex-ai/docs/open-source/ray-on-vertex-ai/run-spark-on-ray)."
-      ]
-    },
-    {
-      "cell_type": "markdown",
-      "metadata": {
-        "id": "405b4ad6c4b7"
-      },
-      "source": [
         "**_NOTE_**: This notebook has been tested in the following environment:\n",
         "\n",
-        "* Python version = 3.10"
+        "* Python version = 3.10\n",
+        "\n",
+        "Learn more about [Ray on Vertex AI](https://cloud.google.com/vertex-ai/docs/open-source/ray-on-vertex-ai/overview) and [Spark on Ray on Vertex AI](https://cloud.google.com/vertex-ai/docs/open-source/ray-on-vertex-ai/run-spark-on-ray)."
       ]
     },
     {