Merge pull request #690 from rootulp/patch-1

Fix typo: 4 -> 5

exercises/sum-of-multiples/src/test/java/SumOfMultiplesTest.java

 public class SumOfMultiplesTest {
 
     @Test
-    public void testSumOfMultiplesOf3and4UpToOne() {
+    public void testSumOfMultiplesOf3and5UpToOne() {
 
         int[] set = {
                 3,