feat(website): add ZH to language badge

Author: debba

website/src/app/page.tsx

@@ -91,7 +91,7 @@ export default function HomePage() {
           <span className="badge version">v{APP_VERSION}</span>
           <span className="badge">Open Source</span>
           <span className="badge">Apache 2.0</span>
-          <span className="badge">🌍 EN | IT | ES</span>
+          <span className="badge">🌍 EN | IT | ES | ZH</span>
         </div>
 
         <p