Update hello-exercise

* rename test, so it corresponds to the class name
* update javadoc to make the task clearer

Author: tboychuk

1-0-java-basics/1-5-0-hello-annotations/src/main/java/com/bobocode/basics/HelloAnnotationsExercise.java

@@ -1,11 +1,13 @@
 package com.bobocode.basics;
 
 /**
- * {@link HelloAnnotationsExercise} is an exercise class that should be annotation with appropriate @{@link Exercise}
- * annotation. With that annotation it should specify exercise name "hello-annotation-basic" and the default complexity
- * level.
+ * {@link HelloAnnotationsExercise} is an exercise class that is marked with be corresponding @{@link Exercise}
+ * annotation. The annotation value specifies exercise name "hello-annotation-basic". It does not specify any custom
+ * complexity level, because this exercise is a basic, which correspond to the default value provided by annotation.
  * <p>
  * todo: Create an annotation @{@link Exercise}.
+ * todo: Set its retention policy so it is visible at runtime
+ * todo: Set its target so it can only be applied to a class
  * todo: Add String value that will store exercise name
  * todo: Add complexityLevel with a default {@link Level} basic
  *

1-0-java-basics/1-5-0-hello-annotations/src/test/java/com/bobocode/basics/HelloAnnotationsTest.java renamed to 1-0-java-basics/1-5-0-hello-annotations/src/test/java/com/bobocode/basics/HelloAnnotationsExerciseTest.java

@@ -10,7 +10,7 @@
 import static org.assertj.core.api.AssertionsForClassTypes.assertThatCode;
 
 @TestMethodOrder(MethodOrderer.OrderAnnotation.class)
-public class HelloAnnotationsTest {
+public class HelloAnnotationsExerciseTest {
 
     @Test
     @Order(1)