Fix NeuralNetwork.printAll() since the change from Groovy to Java

Author: Zomis

src/main/groovy/net/zomis/machlearn/neural/NeuralNetwork.java

@@ -43,7 +43,7 @@ public Stream<NeuronLink> links() {
     }
 
     public void printAll() {
-        System.out.println("$layerCount layers:");
+        System.out.println(getLayerCount() + " layers:");
         layers.stream().forEach(it -> {
             it.printNodes();
             System.out.println();

src/main/groovy/net/zomis/machlearn/neural/Neuron.java

@@ -69,7 +69,8 @@ public void addInputs(NeuronLayer layer) {
     }
 
     public void printInfo() {
-        System.out.println("Node $this\n inputs $inputs\n outputs $outputs\n input $input output $output");
+        System.out.printf("Node %s\n inputs %s\n outputs %s\n input %f output %f%n",
+            this, inputs, outputs, input, output);
     }
 
     @Override