Fix java checkstyle

Author: alx

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

@@ -1,6 +1,6 @@
 package com.thealgorithms.sorts;
 
-class StrandSortTest extends SortingAlgorithmTest{
+class StrandSortTest extends SortingAlgorithmTest {
     @Override
     SortAlgorithm getSortAlgorithm() {
         return new StrandSort();