fix intended whitespace change

Author: aluanhaddad

src/decorators.js

@@ -191,7 +191,7 @@ export function processContent(processor: boolean | Function): any {
 * element container.
 */
 export function containerless(target?): any {
-  let deco = function (t) {
+  let deco = function(t) {
     let r = metadata.getOrCreateOwn(metadata.resource, HtmlBehaviorResource, t);
     r.containerless = true;
   };