update.

main.js

@@ -34,7 +34,7 @@ const sites = [
 ]
 
 const item = (site) => `
-<a href="${site.url}" class="card">
+<a href="${site.url}" target="_blank" class="card">
   <h2>${site.title} &rarr;</h2>
   <p>徐越的${site.description}\n${site.url}</p>
 </a>