Fixed review comments

Author: gurumurthys

introduction_to_amazon_algorithms/imageclassification_caltech/Image-classification-fulltraining.ipynb

@@ -532,7 +532,7 @@
     "\n",
     "Evaluate the image through the network for inteference. The network outputs class probabilities and typically, one selects the class with the maximum probability as the final class output.\n",
     "\n",
-    "**Note:** The output class detected by the network may not be accurate in this example. This is because we have trained the model only for a couple of epochs. If the network is trained for more epochs (say 20), then the output class will be more accurate."
+    "**Note:** The output class detected by the network may not be accurate in this example. To limit the time taken and cost of training, we have trained the model only for a couple of epochs. If the network is trained for more epochs (say 20), then the output class will be more accurate."
    ]
   },
   {