Good catch! I moved this to UX because it relates to language in the interface.
I searched through my moderator PMs and found a similar one. Looking at your screenshot and copied text from the PM, the part that is written by the user being given feedback is “test post for meta topic here”. The rest of it is in the template.
The instruction is confusing because, as you say, you can’t edit the post “below”. To edit it, you would go back to the topic and edit it there. Or you reply to talk about it with moderators.
I don’t think that change is going to be possible because it makes the UI too complicated.
I think the answer here will be to improve the instruction like this:
You can edit your post to make the suggested changes, or reply to this message if you have any questions.
We can also provide a link to the actual post to make it easier to get back to.