Minor comment typo fix (#2745)

Corrected "it's" to "its", which is the correct form given the context.

Co-authored-by: Svetlana Karslioglu <svekars@meta.com>

Author: Panzer0

intermediate_source/reinforcement_q_learning.py

@@ -403,7 +403,7 @@ def optimize_model():
     num_episodes = 50
 
 for i_episode in range(num_episodes):
-    # Initialize the environment and get it's state
+    # Initialize the environment and get its state
     state, info = env.reset()
     state = torch.tensor(state, dtype=torch.float32, device=device).unsqueeze(0)
     for t in count():