Update docs.html

Author: wupz1027

docs/docs.html

@@ -591,7 +591,7 @@ <h2>How It Works</h2>
       </section>
       <section class="section" id="platform">
         <h2>MemoryOS Playground</h2>
-        <a class="memory-platform-btn" href="https://baijia.online/memoryos/" target="_blank" rel="noopener">Go to MemoryOS Platform</a>
+        <a class="memory-platform-btn" href="https://baijia.online/memoryos/" target="_blank" rel="noopener">Go to MemoryOS Playground</a>
         <p style="margin-top:18px;">Web-based memory analytics and management platform for MemoryOS. Coming soon!</p>
       </section>
     </main>