Updated gpu-cudf-vs-pd.ipynb default kernel to "python 3"

Author: gilad-shaham

data-ingestion-and-preparation/gpu-cudf-vs-pd.ipynb

@@ -790,9 +790,9 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python [conda env:.conda-rapids]",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "conda-env-.conda-rapids-py"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
@@ -804,7 +804,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.7"
+   "version": "3.6.8"
   }
  },
  "nbformat": 4,