Fix error simple train example

Author: bukka

examples/logic_gates/simple_train.php

@@ -15,7 +15,7 @@
 	fann_set_activation_function_output($ann, FANN_SIGMOID_SYMMETRIC);
 
 	$filename = dirname(__FILE__) . "/xor.data";
-	if (fann_train_on_file($ann, $filename, $max_epochs, $epochs_between_reports, $desired_error)) {
+	if (fann_train_on_file($ann, $filename, $max_epochs, $epochs_between_reports, $desired_error))
 		print('xor trained.<br>' . PHP_EOL);
 
 	if (fann_save($ann, dirname(__FILE__) . "/xor_float.net"))