Fix typos in SAC and TD3 (#145)

docs/misc/changelog.rst

@@ -25,6 +25,7 @@ Others:
 ^^^^^^^
 - Improve typing coverage of the ``VecEnv``
 - Removed ``AlreadySteppingError`` and ``NotSteppingError`` that were not used
+- Fixed typos in SAC and TD3
 
 Documentation:
 ^^^^^^^^^^^^^^

stable_baselines3/sac/sac.py

@@ -231,10 +231,10 @@ class SAC(OffPolicyAlgorithm):
 
             # Get current Q estimates for each critic network
             # using action from the replay buffer
-            current_q_esimates = self.critic(replay_data.observations, replay_data.actions)
+            current_q_estimates = self.critic(replay_data.observations, replay_data.actions)
 
             # Compute critic loss
-            critic_loss = 0.5 * sum([F.mse_loss(current_q, q_backup) for current_q in current_q_esimates])
+            critic_loss = 0.5 * sum([F.mse_loss(current_q, q_backup) for current_q in current_q_estimates])
             critic_losses.append(critic_loss.item())
 
             # Optimize the critic

stable_baselines3/td3/td3.py

@@ -147,10 +147,10 @@ class TD3(OffPolicyAlgorithm):
                 target_q = replay_data.rewards + (1 - replay_data.dones) * self.gamma * target_q
 
             # Get current Q estimates for each critic network
-            current_q_esimates = self.critic(replay_data.observations, replay_data.actions)
+            current_q_estimates = self.critic(replay_data.observations, replay_data.actions)
 
             # Compute critic loss
-            critic_loss = sum([F.mse_loss(current_q, target_q) for current_q in current_q_esimates])
+            critic_loss = sum([F.mse_loss(current_q, target_q) for current_q in current_q_estimates])
 
             # Optimize the critics
             self.critic.optimizer.zero_grad()