Build Error Fixed

Author: sahilkumarvalecha

src/test/java/com/thealgorithms/sorts/DarkSortTest.java

@@ -1,6 +1,7 @@
 package com.thealgorithms.sorts;
 
 import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
@@ -70,5 +71,4 @@ void testNullArray() {
 
         assertNull(sorted, "Sorting a null array should return null");
     }
-
-}
+}