Update link to Start9 registry

Author: pajasevi

src/components/homepage/Platforms.astro

@@ -49,7 +49,7 @@ import "../../styles/global.css";
 
             <!-- Start9 (made-up logo) -->
             <a
-                    href="https://marketplace.start9.com/dojo?api=community-registry.start9.com&name=Community%20Registry"
+                    href="https://marketplace.start9.com/?api=community-registry.start9.com&name=Community%20Registry&registry=https:%2F%2Fcommunity-registry.start9.com%2F&id=dojo"
                     target="_blank"
                     rel="noreferrer"
                     aria-label="Visit Dojo StartOS package"