The best solution is to edit the override for the articles instead of the language file IF possible.
And that would be in current template folder/html/com_content/article/default.php file. If the template does not have that file or folder it can be copied from componentscom_contentviews folder.
Make sure you create the path as current template folderhtml/com_content/article/default.php file and not current template folder/html/com_content/article/tmpl/default.php
As you can see in componentscom_contentviewsarticle folder you have a tmpl folder where the file default.php is within. and that tmpl folder is not needed when you add in a template override.