revise notification

demo/frontend/src/routes/+page.svelte

@@ -117,6 +117,7 @@
       <p class="text-sm">
         There are <span id="queue_size" class="font-bold">{currentQueueSize}</span>
         user(s) sharing the same GPU, affecting real-time performance. Maximum queue size is {maxQueueSize}.
+        <br>
         To avoid network latency and queuing, we strongly recommend cloning
         <a href="https://github.com/open-mmlab/Live2Diff">our official repository</a> and running it
         locally.