Enable internal links to work as reference links

[jbeder]

Use case or problem

Allow internal links to work as reference links (i.e., the Markdown link style where you write [link text][link-id] and [link-id]: the/url).

Proposed solution

[notes][1]

[1]: Notes.md

should work exactly the same as

[notes](Notes.md)

Current workaround (optional)

You can write these as a URL (see, e.g., here).

Related feature requests (optional)

Related bug report:

Internal links don't work as reference links

Steps to reproduce Create a reference link to an internal file, e.g.: [notes][1] [1]: Notes.md Expected result I’d expect the link to look the same as if I wrote [notes](Notes.md) which is to say, like a regular link, and if I click on it, it should open the Notes.md file. Actual result It produces a link that has a “box with an arrow” next to it (I think this symbolizes an external link?), and when I click on it, it brings up a dialog saying "Are you sure you want to open this link? L…