agregar comentario sobre srcset y no incluir en reporte #3

src/index.ts

@@ -60,6 +60,8 @@ function recurseElement(page: Page, el: Element) {
   if (["audio", "video", "img", "source", "iframe"].includes(el.name)) {
     if (el.attribs.src) {
       checkUrl(page, el, el.attribs.src);
+    } else if (el.attribs.srcset) {
+      // TODO: implementar srcset #3
     } else {
       report.things.push({
         type: "media-no-src",