update notebook

Author: Andrew-Luo1

learning/notebooks/training_vision_1_t4.ipynb

@@ -33,7 +33,7 @@
     "\n",
     "### Usage\n",
     "\n",
-    "This is a simplified version of the main cartpole balance [tutorial](https://colab.research.google.com/github/google-deepmind/mujoco_playground/blob/main/learning/notebooks/training_vision_1.ipynb), adjusted to run on a hosted instance with a T4 GPU."
+    "This is a simplified version of the main cartpole balance [tutorial](https://github.com/google-deepmind/mujoco_playground/blob/main/learning/notebooks/training_vision_1.ipynb), adjusted to run on a hosted instance with a T4 GPU."
    ]
   },
   {
@@ -43,7 +43,7 @@
     "id": "574fcff5"
    },
    "source": [
-    "### Build and Install Madrona MJX (5 min on Colab instance)"
+    "### Build and Install Madrona MJX (5 min on hosted instance)"
    ]
   },
   {