url edit: to a different page than the repo

[laszewsk]

Is it possible to add to the metadata of the document a field called

url: ... link to a page that is not related to github from params.toml ....

I use lots of external repos to manage different "chapters" or categories. Having that field would allow easier management of large documentations.

logic is

if url:
   use the url for edit this
else:
   use the default way on how it works now

Thanks