fix rights for mandatory editable pages

ot_admin/Classes/Controller/SiteController.php

@@ -1771,8 +1771,8 @@ class SiteController extends ActionController
                 }
 
             } else if ($page['ot_page_type'] === OtPageTypeEnum::MANDATORY_EDITABLE->value) {
-                $adminPerms = self::PERM_SHOW;
-                $editorsPerms = self::PERM_SHOW;
+                $adminPerms = self::PERM_SHOW + self::PERM_EDIT_CONTENT;
+                $editorsPerms = self::PERM_SHOW + self::PERM_EDIT_CONTENT;
                 if ($isPremium) {
                     $adminPerms += self::PERM_NEW + self::PERM_EDIT_PAGE;
                     $editorsPerms += self::PERM_NEW + self::PERM_EDIT_PAGE;