fix first cell

tutorial.ipynb

@@ -24,17 +24,15 @@
     "# !pip3 install torch torchvision torchaudio\n",
     "\n",
     "# # # unQuote to install dependency\n",
-    "# # # Gym env for game simulation\n",
+    "# # # gymnasium env for game simulation\n",
     "# # install for windows Microsoft C++ Build Tools 14+ (require for Box2D lib):\n",
     "# # https://visualstudio.microsoft.com/downloads/\n",
-    "# !pip3 install gym[all]\n",
-    "# !pip3 install gym[atari]\n",
-    "# !pip install gym[accept-rom-license]\n",
-    "# # or\n",
-    "# conda install -c conda-forge gym-all\n",
+    "# !pip install gymnasium[all]\n",
+    "# !pip install gymnasium[atari]\n",
+    "# !pip install gymnasium[accept-rom-license]\n",
     "# if you can't install Box2D, try :\n",
     "# for windows: conda install -c anaconda swig\n",
-    "# or else try the docker.\n",
+    "# or else try the dockerfile.\n",
     "\n",
     "# # # Ray install\n",
     "# pip install -U \"ray[default]\"\n",
@@ -314,7 +312,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.9.13 (main, Oct 13 2022, 21:23:06) [MSC v.1916 64 bit (AMD64)]"
   },
   "orig_nbformat": 4,
   "vscode": {