feat(docs/op-stack): @tremarkley 's autorefresh

docs/op-stack/src/.vuepress/enhanceApp.js

+import event from '@vuepress/plugin-pwa/lib/event'
+
 export default ({ router }) => {
+  registerAutoReload();
+  
   router.addRoutes([
     { path: '/docs/', redirect: '/' },
   ])
 }
+
+// When new content is detected by the app, this will automatically
+// refresh the page, so that users do not need to manually click
+// the refresh button. For more details see:
+// https://linear.app/optimism/issue/FE-1003/investigate-archive-issue-on-docs
+const registerAutoReload = () => {
+    event.$on('sw-updated', e => e.skipWaiting().then(() => {
+      location.reload(true);
+    }))
+}