@xf 2.1.7
You have to change the template: post_macros (in xf 2.1.7 Defaultstyle)
Find lineNumber ~119:
Code:
<xf:if is="$post.last_edit_date">
goto lineNumber ~123:
and after this:
change lineNumber ~124:, from this:
Code:
{{ phrase('last_edited_by_moderator:') }} <xf:date time="{$post.last_edit_date}" />
to this:
Code:
<a href="{{ link('https://www.yourdomain.tld/members/') }}{{$post.last_edit_user_id}}">{{ phrase('last_edited_by_moderator:') }} <xf:date time="{$post.last_edit_date}" />...</a>
If a post is changed by a moderator/admin, after the editing time, a clickable link appears that refers to the profile of the corresponding moderator/admin.
save & enjoy
hth