style: enable InvalidJavadocPosition in checkstyle (#5237)

enable style InvalidJavadocPosition

Co-authored-by: Samuel Facchinello <samuel.facchinello@piksel.com>

src/test/java/com/thealgorithms/datastructures/graphs/BoruvkaAlgorithmTest.java

@@ -30,7 +30,7 @@ public class BoruvkaAlgorithmTest {
         edges.add(new BoruvkaAlgorithm.Edge(7, 8, 11));
 
         final var graph = new Graph(9, edges);
-        /**
+        /*
          * Adjacency matrix
          *    0   1   2   3   4   5   6   7   8
          * 0  0  10  12   0   0   0   0   0   0
@@ -56,7 +56,7 @@ public class BoruvkaAlgorithmTest {
 
         final var graph = new Graph(2, edges);
 
-        /**
+        /*
          * Adjacency matrix
          *    0  1
          * 0  0  10
@@ -79,7 +79,7 @@ public class BoruvkaAlgorithmTest {
 
         final var graph = new Graph(4, edges);
 
-        /**
+        /*
          * Adjacency matrix
          *    0  1  2  3
          * 0  0  7  2  5

src/test/java/com/thealgorithms/datastructures/lists/QuickSortLinkedListTest.java

@@ -1,16 +1,14 @@
 package com.thealgorithms.datastructures.lists;
 
-/**
- * Test cases for QuickSortLinkedList
- * Author: Prabhat-Kumar-42
- * GitHub: https://github.com/Prabhat-Kumar-42
- */
-
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
 import org.junit.jupiter.api.Test;
-
+/**
+ * Test cases for QuickSortLinkedList
+ * Author: Prabhat-Kumar-42
+ * GitHub: https://github.com/Prabhat-Kumar-42
+ */
 public class QuickSortLinkedListTest {
 
     @Test

src/test/java/com/thealgorithms/datastructures/lists/ReverseKGroupTest.java

@@ -1,15 +1,13 @@
 package com.thealgorithms.datastructures.lists;
 
-/**
- * Test cases for Reverse K Group LinkedList
- * Author: Bama Charan Chhandogi (https://github.com/BamaCharanChhandogi)
- */
-
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
 import org.junit.jupiter.api.Test;
-
+/**
+ * Test cases for Reverse K Group LinkedList
+ * Author: Bama Charan Chhandogi (https://github.com/BamaCharanChhandogi)
+ */
 public class ReverseKGroupTest {
 
     @Test

src/test/java/com/thealgorithms/datastructures/lists/RotateSinglyLinkedListsTest.java

@@ -1,15 +1,14 @@
 package com.thealgorithms.datastructures.lists;
 
-/**
- * Test cases for RotateSinglyLinkedLists
- * Author: Bama Charan Chhandogi (https://github.com/BamaCharanChhandogi)
- */
-
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
 import org.junit.jupiter.api.Test;
 
+/**
+ * Test cases for RotateSinglyLinkedLists
+ * Author: Bama Charan Chhandogi (https://github.com/BamaCharanChhandogi)
+ */
 public class RotateSinglyLinkedListsTest {
 
     @Test