docs: missing variable explanation filled

src/main/java/edu/ntnu/idatt2001/Wargames/battlesimulation/maintnance/WarGameApp.java

@@ -8,7 +8,7 @@ public class WarGameApp {
 
     /**
      * main method that doesn't extend application, which the main method should extend
-     * @param args
+     * @param args argument
      */
     public static void main(String[] args) {
         WarGamesGUI.main(args);

src/main/java/edu/ntnu/idatt2001/Wargames/battlesimulation/maintnance/WarGamesGUI.java

@@ -13,7 +13,7 @@ public class WarGamesGUI extends Application {
 
     /**
      * main method that starts the application
-     * @param args
+     * @param args argument
      */
     public static void main(String[] args) {
         launch(args);