Revert accidental edit

ch06/02_bonus_additional-experiments/previous_chapters.py

@@ -11,7 +11,7 @@ import numpy as np
 import tiktoken
 import torch
 import torch.nn as nn
-from torch.utils.data import Daaset, DataLoader
+from torch.utils.data import Dataset, DataLoader
 
 #####################################
 # Chapter 2