Edit Document From Web Form

I’ve successfully created a web form which is expected to be filled by the public. However, I need the users to be able to edit them. How do I make up the edit URL for the web form.

Here is what I’ve tried.
Say the url isabc.com/some-form

I tried appending the ID of the web form to the url like this

However, I simply just get a display saying the page does not exist