change default menu icon for generated CRUDs

Author: tabacitu

src/Console/Commands/CrudBackpackCommand.php

@@ -69,7 +69,7 @@ public function handle()
 
         // Create the sidebar item
         $this->call('backpack:add-sidebar-content', [
-            'code' => "<li class=\"nav-item\"><a class=\"nav-link\" href=\"{{ backpack_url('$nameKebab') }}\"><i class=\"nav-icon la la-question\"></i> $namePlural</a></li>",
+            'code' => "<li class=\"nav-item\"><a class=\"nav-link\" href=\"{{ backpack_url('$nameKebab') }}\"><i class=\"nav-icon la la-th-list\"></i> $namePlural</a></li>",
         ]);
 
         // if the application uses cached routes, we should rebuild the cache so the previous added route will