Fixes port already used in welcome test

The use of RepeatedTest in the welcome test caused failures in some
computers due to an insufficient time to close the port.

This commit fixes this error by using a for to repeat the test,
avoiding the creation of a new server in each repetition.

src/test/java/es/uvigo/esei/dai/hybridserver/week1/WelcomePageTest.java

@@ -23,14 +23,16 @@ import static org.hamcrest.MatcherAssert.assertThat;
 
 import java.io.IOException;
 
-import org.junit.jupiter.api.RepeatedTest;
+import org.junit.jupiter.api.Test;
 
 import es.uvigo.esei.dai.hybridserver.utils.HybridServerTestCase;
 
 public class WelcomePageTest extends HybridServerTestCase {
 
-  @RepeatedTest(10)
+  @Test
   public void testWelcome() throws IOException {
-    assertThat(getContentWithType(url, "text/html"), containsString("Hybrid Server"));
+    for (int i = 0; i < 10; i++) {
+      assertThat(getContentWithType(url, "text/html"), containsString("Hybrid Server"));
+    }
   }
 }