Add discriptive comment

src/intermediate/Searching.java

@@ -518,6 +518,7 @@ public static int[] intersectionOfArrays(int[]nums1, int[]nums2){
         return ans;
     }
 
+    // This check if the target element is found in the array
     private static boolean isFound(int[]nums, int target){
         int start = 0, end = nums.length - 1;