Fix JavaDoc in AsyncFSStorageAgent.
diff --git a/common/src/main/java/com/datatorrent/common/util/AsyncFSStorageAgent.java b/common/src/main/java/com/datatorrent/common/util/AsyncFSStorageAgent.java
index e57b78c..430a941 100644
--- a/common/src/main/java/com/datatorrent/common/util/AsyncFSStorageAgent.java
+++ b/common/src/main/java/com/datatorrent/common/util/AsyncFSStorageAgent.java
@@ -13,11 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-/**
- * @since 3.1.0
- */
-
 package com.datatorrent.common.util;
 
 import java.io.*;
@@ -30,6 +25,12 @@
 import org.slf4j.LoggerFactory;
 
 import com.datatorrent.netlet.util.DTThrowable;
+
+/**
+ * <p>AsyncFSStorageAgent class.</p>
+ *
+ * @since 3.1.0
+ */
 public class AsyncFSStorageAgent extends FSStorageAgent
 {
   private final transient FileSystem fs;