docs: add missing $prioritize

Author: kenjis

user_guide_src/source/incoming/routing/052.php

@@ -1,5 +1,13 @@
 <?php
 
+// In app/Config/Routing.php
+class Routing extends BaseRouting
+{
+    // ...
+    public bool $prioritize = true;
+    // ...
+}
+
 // to enable
 $routes->setPrioritize();