Update app.py

app.py

@@ -140,7 +140,7 @@ class CustomDataset(torch.utils.data.Dataset):
                 text,
                 max_length=self.max_length,
                 padding='max_length',
-                trunc ation=True,
+                truncation=True,
                 return_attention_mask=True,
                 return_tensors='pt',
             )