correct cross entropy syntax

Author: awbrown90

LeNet-Lab-Solution.ipynb

@@ -309,7 +309,7 @@
     "rate = 0.001\n",
     "\n",
     "logits = LeNet(x)\n",
-    "cross_entropy = tf.nn.softmax_cross_entropy_with_logits(logits, one_hot_y)\n",
+    "cross_entropy = tf.nn.softmax_cross_entropy_with_logits(labels=one_hot_y, logits=logits)\n",
     "loss_operation = tf.reduce_mean(cross_entropy)\n",
     "optimizer = tf.train.AdamOptimizer(learning_rate = rate)\n",
     "training_operation = optimizer.minimize(loss_operation)"