Apply suggestions from code review

Co-authored-by: Edgaras Janušauskas <edgaras.janusauskas@gmail.com>

Author: markstory

templates/element/deprecations_panel.php

@@ -23,7 +23,7 @@
 
 use function Cake\Core\h;
 
-$hasAny = count($app) + count($plugins) + count($cake) . count($vendor);
+$hasAny = count($app) + count($plugins) + count($cake) + count($vendor);
 
 $printer = function ($section, $data) {
 ?>