format TargetFields correctly, missig empty line.

Signed-off-by: Michael Hirsch <michael.hirsch@bosch-si.com>

hawkbit-core/src/main/java/org/eclipse/hawkbit/repository/TargetFields.java

@@ -60,6 +60,7 @@ public enum TargetFields implements FieldNameProvider {
      * distribution sets which is installed on the target.
      */
     INSTALLEDDS("targetInfo.installedDistributionSet", "name", "version"),
+
     /**
      * The tags field.
      */