Update GrossPayCalculator.java

Author: angiejones

chapter2/GrossPayCalculator.java

@@ -4,7 +4,7 @@
 
 public class GrossPayCalculator {
 
-    public static void main(String arg[]){
+    public static void main(String[] args){
 
         //1. Get the number of hours worked
         System.out.println("Enter the number of hours the employee worked.");