Update index.html

Author: tharun9772

games/index.html

@@ -813,12 +813,12 @@ <h3>Bloxy AI</h3>
     <div class="game-card">
   <img src="https://cdn.jsdelivr.net/gh/gn-math/gn-math-DONTDMCA@main/favicon.png" alt="GN-Math">
   <h3>GN-Math</h3>
-  <a class="play-btn" href="/apps/sandstone">Use</a>
+  <a class="play-btn" href="/apps/gn-math">Use</a>
   </div>
   <div class="game-card">
   <img src="https://cdn.jsdelivr.net/gh/genizy/sandstone-gn/image.png" alt="Sandstone - Proxy">
   <h3>Standstone -  Proxy</h3>
-  <a class="play-btn" href="/apps/gn-math">Use</a>
+  <a class="play-btn" href="/apps/sandstone">Use</a>
     </div>
   <div class="game-card">
   <img src="/39e50783014f84b22616ad0a139b1e54.png" alt="Dominum Browser">