Fix download button on main page

Author: CakeLancelot

layouts/index.html

@@ -6,7 +6,7 @@ <h1>{{ .Title }}</h1>
     </div>
     <div class="col-lg-9 col-xl-8 text-center">
       <p class="lead">{{ .Params.lead | safeHTML }}</p>
-      <a class="btn btn-primary btn-cta rounded-pill btn-lg my-3" href="https://github.com/OpenFusionProject/OpenFusion/releases/latest" role="button">Download</a>
+      <a class="btn btn-primary btn-cta rounded-pill btn-lg my-3" href="/download" role="button">Download</a>
       {{ .Content }}
     </div>
   </div>