Update download link for v23 project (#4640)

* Update download link for v23 project

* Link directly to download

Author: tepi

articles/guide/quick-start.adoc

@@ -21,7 +21,7 @@ In this guide, you learn how to build a small but fully functional ToDo applicat
 
 ++++
 <p>
-<a href="https://start.vaadin.com/dl?preset=flow-quickstart-tutorial" class="button primary water quickstart-download-project"
+<a href="https://github.com/vaadin/skeleton-starter-flow-spring/archive/refs/heads/v23.zip" class="button primary water quickstart-download-project"
  onClick="function test(){ _hsq && _hsq.push(['trackEvent', { id: '000007517662', value: null }]); } test(); return true;">Download</a>
 </p>
 ++++