Fix checkstyle failure

Author: mdesharnais

handlebars/src/main/java/com/github/jknack/handlebars/context/FieldValueResolver.java

@@ -218,8 +218,8 @@ protected Object invokeMember(final FieldWrapper field, final Object context) {
       return null;
     } catch (Exception ex) {
       throw new IllegalStateException(
-          "Shouldn't be illegal to access field '" + field.getName()
-              + "'", ex);
+          "Shouldn't be illegal to access field '" + field.getName() +
+          "'", ex);
     }
   }