Fix page action URLs to use dasherized format instead of camelCase

Inflector::variable() converts 'model_gesucht' to 'modelGesucht' which
doesn't match CakePHP's URL conventions. Changed to Inflector::dasherize()
which produces the expected 'model-gesucht' format.

Author: dereuromark

src/Controller/Admin/PagesController.php

@@ -26,7 +26,7 @@ public function index() {
 			$page = substr($file, 0, -4);
 			$pages[$page] = [
 				'label' => Inflector::humanize($page),
-				'action' => Inflector::variable($page),
+				'action' => Inflector::dasherize($page),
 			];
 		}