Remove a confusing comment on <link>.as

Closes whatwg#3489.

Also, adds my name to acknowledgements.

source

@@ -13770,7 +13770,7 @@ interface <dfn interface>HTMLLinkElement</dfn> : <span>HTMLElement</span> {
   [<span>CEReactions</span>] attribute USVString <span data-x="dom-link-href">href</span>;
   [<span>CEReactions</span>] attribute DOMString? <span data-x="dom-link-crossOrigin">crossOrigin</span>;
   [<span>CEReactions</span>] attribute DOMString <span data-x="dom-link-rel">rel</span>;
-  [<span>CEReactions</span>] attribute DOMString <span data-x="dom-link-as">as</span>; // (default "")
+  [<span>CEReactions</span>] attribute DOMString <span data-x="dom-link-as">as</span>;
   [SameObject, PutForwards=<span data-x="dom-DOMTokenList-value">value</span>] readonly attribute <span>DOMTokenList</span> <span data-x="dom-link-relList">relList</span>;
   [<span>CEReactions</span>] attribute DOMString <span data-x="dom-link-media">media</span>;
   [<span>CEReactions</span>] attribute DOMString <span data-x="dom-link-integrity">integrity</span>;
@@ -128950,6 +128950,7 @@ INSERT INTERFACES HERE
   Yoav Weiss,
   Yonathan Randolph,
   Yu Huojiang,
+  Yuki Okushi, <!-- JohnTitor on GitHub -->
   Yury Delendik,
   平野裕 (Yutaka Hirano),
   Yuzo Fujishima,