typo in comment

ch12_rl/value_learning.ipynb

@@ -363,7 +363,7 @@
     "s = states[-1]\n",
     "r = rewards[-1]\n",
     "values = [model(i).item() for i in s]\n",
-    "# 验证gamma=1时，gae等同于MC学习\n",
+    "# 验证lambda_=1时，gae等同于MC学习\n",
     "mc_advantage = []\n",
     "for i in range(len(r)):\n",
     "    G = compute_cum_rewards(r[i:], gamma)\n",
@@ -390,7 +390,7 @@
     }
    ],
    "source": [
-    "# 验证gamma=0时，gae等同于TD学习\n",
+    "# 验证lambda_=0时，gae等同于TD学习\n",
     "vt_next = values[:-1] + [0.0]\n",
     "td_advantage = torch.tensor(r) + gamma * torch.tensor(vt_next) - torch.tensor(values)\n",
     "gae = GAE(gamma, 0)\n",