fix comment

Author: lazyprogrammer

ann_class/forwardprop.py

@@ -42,7 +42,7 @@ def sigmoid(a):
 def forward(X, W1, b1, W2, b2):
     Z = sigmoid(X.dot(W1) + b1) # sigmoid
     # Z = np.tanh(X.dot(W1) + b1) # tanh
-    # Z = np.maximum(X.dot(W1) + b1) # relu
+    # Z = np.maximum(X.dot(W1) + b1, 0) # relu
     A = Z.dot(W2) + b2
     expA = np.exp(A)
     Y = expA / expA.sum(axis=1, keepdims=True)