Fix new Linkifier clicks not registering

I renamed the event but missed an event listener.

Change-Id: I0a042be97510763515901685e16324f50cb523aa
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2584265
Reviewed-by: Alfonso Castaño <alcastano@google.com>
Commit-Queue: Jack Franklin <jacktfranklin@chromium.org>
Auto-Submit: Jack Franklin <jacktfranklin@chromium.org>

front_end/component_docs/linkifier/url.html

@@ -37,7 +37,7 @@
 
         const container = document.getElementById('container');
 
-        container.addEventListener('linkifier-click', function(event) {
+        container.addEventListener('linkifier-activated', function(event) {
           const data = JSON.stringify(event.data, null, 2)
           alert(`Linkifier click: ${data}`)
 

front_end/components/Linkifier.js

@@ -1006,7 +1006,7 @@ function listenForNewComponentLinkifierEvents() {
   listeningToNewEvents = true;
 
   window.addEventListener(
-      'linkifier-click',
+      'linkifier-activated',
       /**
    *
    * @param {!Event} event