Fix

Author: Hardvan

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

@@ -5,6 +5,10 @@
 
 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