featured image

[ghost]

I am attempting to get the featured image set on each category title post to display on the wedocs main catagory page. e.g.

https://help.tibus.net - an image beside/above "Email" category section title.

The wedocs theme does have:
lib/init.php: add_theme_support('post-thumbnails');

I cannot find the correct location in the theme to include the thumbnail:

// check if the post or page has a Featured Image assigned to it.
if ( has_post_thumbnail() ) {
    the_post_thumbnail();
}

I do see you setting images on your theme demo site https://wedevs.com/docs specifically the "Others" section on the demo site is close to how I would like it.

Could you direct me to the correct place to make the edit in the theme?

Thanks,