Fix download link in index.html

Author: TheRainbowPhoenix

index.html

@@ -856,7 +856,7 @@ <h3 class="download-title">HollyHock 2 (Latest)</h3>
                     <p class="download-description">The stable and recommended version with full Python support and
                         extensive library compatibility.</p>
                     <a href="/python/install-guide" class="btn btn-primary btn-download"
-                        onclick="downloadFile('/python/PythonExtra-hh2.bin', 'PythonExtra.bin'); return false;">Download
+                        onclick="downloadFile('/python/PythonExtra-hh2.bin', 'PythonExtra-hh2.bin'); return false;">Download
                         Now</a>
                 </div>
 
@@ -1178,4 +1178,4 @@ <h2 class="cta-title">Need Help?</h2>
 
 </body>
 
-</html>
+</html>