Change one test case title.

Author: rachelshu

jackson/src/test/java/org/baeldung/jackson/test/JacksonFieldUnitTest.java

@@ -22,7 +22,7 @@
 public class JacksonFieldUnitTest {
 
     @Test
-    public final void givenDifferentAccessLevels_whenSerializing_thenPublicFieldsAreSerialized() throws JsonProcessingException {
+    public final void givenDifferentAccessLevels_whenPublic_thenSerializable() throws JsonProcessingException {
         final ObjectMapper mapper = new ObjectMapper();
 
         final MyDtoAccessLevel dtoObject = new MyDtoAccessLevel();