style(site): restore the footer link line break

Refs #19

Author: Seungpyo1007

site/src/pages/index.astro

@@ -330,7 +330,8 @@ const endpoints = [
         <div class="foot-links">
           <a href={ghUrl} target="_blank" rel="noopener">GitHub</a>
           <a href={`${base}docs`}>API reference</a>
-          <a href="#playground">Playground</a>        </div>
+          <a href="#playground">Playground</a>
+        </div>
       </div>
       <p class="foot-warn">⚠ Curated, growing dataset — not yet an exhaustive catalog of every device.</p>
       <p class="foot-engine">Validated, scored &amp; served by <a href={engineUrl} target="_blank" rel="noopener"><span class="mark">T</span>TechEngine</a> — the open data + scoring engine.</p>