Use post-processing to remove unwanted links to HTMLLS

See also https://github.com/w3c/respec/issues/1372

getusermedia.js

@@ -1,3 +1,11 @@
+// Working around  respec using WHATWG HTML links for EventHandler
+// See also https://github.com/w3c/respec/issues/1372
+function cleanHTMLRef() {
+    [...document.querySelectorAll("a[href='https://html.spec.whatwg.org/multipage/#eventhandler']")].forEach(a => a.href = "https://www.w3.org/TR/html52/webappapis.html#event-handler");
+    document.getElementById('bib-HTML').nextElementSibling.remove();
+    document.getElementById('bib-HTML').remove();
+}
+
 var respecConfig = {
    // specification status (e.g. WD, LCWD, NOTE, etc.). If in doubt use ED.
    specStatus:           "ED",
@@ -107,5 +115,6 @@ var respecConfig = {
                 img.height = 21;
                 el.appendChild(img);
             });
-    }
+    },
+    postProcess: [cleanHTMLRef]
 };