Fix doc: Gym to Gymnasium Atari install command in examples.rst (#1773

) * Update examples.rst * Update changelog.rst
DLR-RM · Dec 5, 2023 · 373166d · 373166d
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diff --git a/docs/guide/examples.rst b/docs/guide/examples.rst
@@ -364,7 +364,7 @@ Atari Games
 
 Training a RL agent on Atari games is straightforward thanks to ``make_atari_env`` helper function.
 It will do `all the preprocessing <https://danieltakeshi.github.io/2016/11/25/frame-skipping-and-preprocessing-for-deep-q-networks-on-atari-2600-games/>`_
-and multiprocessing for you. To install the Atari environments, run the command ``pip install gym[atari, accept-rom-license]`` to install the Atari environments and ROMs, or install Stable Baselines3 with ``pip install stable-baselines3[extra]`` to install this and other optional dependencies.
+and multiprocessing for you. To install the Atari environments, run the command ``pip install gymnasium[atari,accept-rom-license]`` to install the Atari environments and ROMs, or install Stable Baselines3 with ``pip install stable-baselines3[extra]`` to install this and other optional dependencies.
 
 .. image:: ../_static/img/colab-badge.svg
    :target: https://colab.research.google.com/github/Stable-Baselines-Team/rl-colab-notebooks/blob/sb3/atari_games.ipynb

diff --git a/docs/misc/changelog.rst b/docs/misc/changelog.rst
@@ -91,6 +91,7 @@ Documentation:
 - Updated RL Tips and Tricks (include recommendation for evaluation, added links to DroQ, ARS and SBX).
 - Fixed various typos and grammar mistakes
 - Added PokemonRedExperiments to the project page
+- Fixed an out-of-date command for installing Atari in examples
 
 Release 2.1.0 (2023-08-17)
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