Update popup.js (#1131)

The separator used in docs title has been updated from '-' to '|'

functional-samples/tutorial.tabs-manager/popup.js

@@ -28,7 +28,7 @@ const elements = new Set();
 for (const tab of tabs) {
   const element = template.content.firstElementChild.cloneNode(true);
 
-  const title = tab.title.split('-')[0].trim();
+  const title = tab.title.split('|')[0].trim();
   const pathname = new URL(tab.url).pathname.slice('/docs'.length);
 
   element.querySelector('.title').textContent = title;