[Hotfix] Revert angular demo to previous version (#1282)

Revert angular demo to previous version

Author: sequba

docs/guide/integration-with-angular.md

@@ -8,7 +8,7 @@ more details.
 ## Demo
 
 <iframe
-     src="https://codesandbox.io/embed/github/handsontable/hyperformula-demos/tree/2.5.x/angular-demo?autoresize=1
+     src="https://codesandbox.io/embed/github/handsontable/hyperformula-demos/tree/2.4.x/angular-demo?autoresize=1
      &fontsize=11&hidenavigation=1&theme=light&view=preview"
      style="width:100%; height:500px; border:0; border-radius: 4px; overflow:hidden;"
      title="handsontable/hyperformula-demos: angular-demo"