Update docstrings for the renamed notebook

model.py

@@ -1,5 +1,5 @@
 """Shared model/Grad-CAM code, extracted from
-Problem10_Explainable_Auditable_Defect_Detection.ipynb (sections 3 and 6) so the
+mit-group8-explainable-defect-detection.ipynb (sections 3 and 6) so the
 Space app and the training script can both import it without duplication."""
 import numpy as np
 import torch

train.py

@@ -1,6 +1,6 @@
 """Trains the DefectCNN on the local NEU-DET mirror and saves weights for the Space app.
 Reuses the same architecture/hyperparameters as the main notebook's section 3-4
-(Problem10_Explainable_Auditable_Defect_Detection.ipynb) -- this script exists only
+(mit-group8-explainable-defect-detection.ipynb) -- this script exists only
 because the notebook itself never persisted a checkpoint to disk."""
 import glob
 import os