javadoc: Fix doclint {@code} within <code> warnings

artemis-junit/src/main/java/org/apache/activemq/artemis/junit/ActiveMQConsumerResource.java

@@ -30,10 +30,10 @@ import org.apache.activemq.artemis.api.core.client.ServerLocator;
  *
  * <pre><code>
  * public class SimpleTest {
- *    {@code @Rule}
+ *     @Rule
  *     public ActiveMQConsumerResource client = new ActiveMQProducerResource( "vm://0", "test.queue" );
  *
- *    {@code @Test}
+ *     @Test
  *     public void testSomething() throws Exception {
  *         // Use the embedded client here
  *         ClientMessage message = client.receiveMessage();

artemis-junit/src/main/java/org/apache/activemq/artemis/junit/ActiveMQDynamicProducerResource.java

@@ -31,10 +31,10 @@ import org.apache.activemq.artemis.api.core.client.ServerLocator;
  *
  * <pre><code>
  * public class SimpleTest {
- *    {@code @Rule}
+ *     @Rule
  *     public ActiveMQDynamicProducerResource producer = new ActiveMQDynamicProducerResource( "vm://0");
  *
- *    {@code @Test}
+ *     @Test
  *     public void testSomething() throws Exception {
  *         // Use the embedded ClientProducer here
  *         producer.sendMessage( "test.address", "String Body" );

artemis-junit/src/main/java/org/apache/activemq/artemis/junit/ActiveMQProducerResource.java

@@ -32,10 +32,10 @@ import org.apache.activemq.artemis.api.core.client.ServerLocator;
  *
  * <pre><code>
  * public class SimpleTest {
- *    {@code @Rule}
+ *     @Rule
  *     public ActiveMQProducerResource producer = new ActiveMQProducerResource( "vm://0", "test.queue");
  *
- *    {@code @Test}
+ *     @Test
  *     public void testSomething() throws Exception {
  *         // Use the embedded ClientProducer here
  *         producer.sendMessage( "String Body" );

artemis-junit/src/main/java/org/apache/activemq/artemis/junit/EmbeddedActiveMQResource.java

@@ -52,10 +52,10 @@ import org.slf4j.LoggerFactory;
  *
  * <pre><code>
  * public class SimpleTest {
- *    {@code @Rule}
+ *     @Rule
  *     public EmbeddedActiveMQResource server = new EmbeddedActiveMQResource();
  *
- *    {@code @Test}
+ *     @Test
  *     public void testSomething() throws Exception {
  *         // Use the embedded server here
  *     }

artemis-junit/src/main/java/org/apache/activemq/artemis/junit/EmbeddedJMSResource.java

@@ -63,10 +63,10 @@ import org.slf4j.LoggerFactory;
  *
  * <pre><code>
  * public class SimpleTest {
- *    {@code @Rule}
+ *     @Rule
  *     public EmbeddedJMSResource server = new EmbeddedJMSResource();
  *
- *    {@code @Test}
+ *     @Test
  *     public void testSomething() throws Exception {
  *         // Use the embedded server here
  *     }