The problem you're addressing (if any)

External docs in the left index are missing an "external link" icon to inform the users that they'll be redirected to another website.

The solution you'd like

Current version	What it should look like

NOTE: Read the Docs seems to have support for it, since the picture above is taken directly from their docs

The value to a user and who that user might be

Less surprises when the user is redirected to another website.

Completion criteria checklist

(This section is for developer use only. Please do not modify it.)