Replace qualifier with an import DocTypes

Author: maniaba

system/Common.php

@@ -32,6 +32,7 @@
 use CodeIgniter\Test\TestLogger;
 use Config\App;
 use Config\Database;
+use Config\DocTypes;
 use Config\Logger;
 use Config\Services;
 use Config\View;
@@ -889,7 +890,7 @@ function redirect(?string $route = null): RedirectResponse
      */
     function _solidus(): string
     {
-        if (config(\Config\DocTypes::class)->html5 ?? false) {
+        if (config(DocTypes::class)->html5 ?? false) {
             return '';
         }