flatland-animate change kernel to match Python 3.

notebooks/flatland-animate.ipynb

@@ -62,9 +62,9 @@
  "metadata": {
   "hide_input": false,
   "kernelspec": {
-   "display_name": "ve367",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "ve367"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {