Formatted Knapsack.java to pass linter and added 0/1 Knapsack algorithm

Author: Arpita01-work

src/main/java/com/thealgorithms/dynamicprogramming/Knapsack.java

@@ -72,6 +72,6 @@ public static void main(String[] args) {
         int weightCapacity = 50;
 
         int maxValue = knapSack(weightCapacity, weights, values);
-        System.out.println("Maximum value = " + maxValue); // Output: 220
+        System.out.println("Maximum value = " + maxValue); // Output : 220
     }
 }