Add an 'edit' link to the wiki

[karthink]

That links to the right place inside https://github.com/SystemCrafters/wiki-site/tree/main/content.

For example, clicking the edit link on this page should take the user to this page. This makes it convenient to edit the wiki when spotting an error or opportunity.

[shombando]

@daviwil and @TheCatster we have been having discussions on IRC about easily editing the wiki and this idea from @karthink is very simple and elegant.

I wonder if we can even send a data hotkey event in the url itself so it automatically loads in the editing interface.
<button class="btn-octicon tooltipped tooltipped-nw" type="submit" aria-label="Edit the file in your fork of this project" data-hotkey="e" data-disable-with=""> ... </button>
Or something more sane :)

[TheCatster]

Would either of you be interested in picking this up again? My Web-fu is null, so I wouldn't be able to take this on, but would be nice to have this feature.