Solved link on a new page

If a link is included in a text we would like this link will open on a new page.
Till now, after every update, I have to change the code in the file: =11.0ptcomponents/com_kunena/template/aurelia/layouts/bbcode/url/default.php -
Code:    $target = ' target="' . $this->escape($this->target) . '"'; into     $target = ' target="_blank"';

Request: is it possible to add a possibility in the BBcvode in the back end to make this choice for a new page/window?

Thanks

You don't have to adjust the code after every upgrade if you create a template override. Template Overrides | Kunena Docs

Thanks for your reaction.
I tried to make the override as indicated, but.. I am using the template Helix Ultimate. After " templates\helixultimate\html\com_kunena\" there is missing : "layouts\message\item\default.php ".
What to do now?
Thanks for your reaction.

You must create this path yourself. Unzip my uploaded file and copy the folder to ../templates/shaper_helixultimate/html/
Then you have the path and can edit the contained default.php

Sorry, I see in your first post that you want to edit a another file. Then this is the correct path with the correct default.php

Thanks for your quick response.
i made the path, folder by folder. In your unzipped file the deault.php is a different one. I assume I have to copy the default, as indicated here: "components\com_kunena\template\aurelia\layouts\message\item\default.php"
and adjust this php.file?
Thanks