Fix category_code attribute label

Author: thomas-kl1

Setup/Patch/Data/AddCategoryCodeAttributeV1.php

@@ -41,7 +41,7 @@ public function apply(): self
             'category_code',
             [
                 'type' => 'varchar',
-                'label' => 'Identifier',
+                'label' => 'Category Code',
                 'input' => 'text',
                 'source' => '',
                 'visible' => true,