dspace-api: remove trailing whitespace

dspace-api/src/main/java/org/dspace/importer/external/metadatamapping/transform/StringJsonValueMappingMetadataProcessorService.java

@@ -28,7 +28,7 @@ import org.dspace.util.SimpleMapConverter;
  * to map to a single string value based on mapped keys.<br/>
  * Like:<br/>
  * <code>journal-article = Article<code/>
- * 
+ *
  * @author paulo-graca
  *
  */
@@ -83,4 +83,4 @@ public class StringJsonValueMappingMetadataProcessorService implements JsonPathM
         this.path = path;
     }
 
-}
+}