Merge pull request #2160 from RenuPatelGoogle:patch-24

PiperOrigin-RevId: 496467045

Author: copybara-github

site/en/tutorials/reinforcement_learning/actor_critic.ipynb

@@ -74,7 +74,7 @@
         "id": "kFgN7h_wiUJq"
       },
       "source": [
-        "This tutorial demonstrates how to implement the [Actor-Critic](https://papers.nips.cc/paper/1786-actor-critic-algorithms.pdf) method using TensorFlow to train an agent on the [Open AI Gym](https://gym.openai.com/) [`CartPole-v0`](https://www.gymlibrary.dev/environments/classic_control/cart_pole/) environment.\n",
+        "This tutorial demonstrates how to implement the [Actor-Critic](https://papers.nips.cc/paper/1786-actor-critic-algorithms.pdf) method using TensorFlow to train an agent on the [Open AI Gym](https://www.gymlibrary.dev/) [`CartPole-v0`](https://www.gymlibrary.dev/environments/classic_control/cart_pole/) environment.\n",
         "The reader is assumed to have some familiarity with [policy gradient methods](https://papers.nips.cc/paper/1713-policy-gradient-methods-for-reinforcement-learning-with-function-approximation.pdf) of [(deep) reinforcement learning](https://en.wikipedia.org/wiki/Deep_reinforcement_learning). \n"
       ]
     },