Fix incorrect links to GitHub in module browser for core modules.

[olafgrabienski]

Description of the bug

This is a follow-up to #5003 which was merged only recently. The Github links for core modules don't work. They point to a non existent backdrop-contrib repo.

Steps To Reproduce

To reproduce the behavior:

1. Go to admin/modules', and look for a core module, e.g. Administration Bar.
2. Click on the "more" toggle link, and have a look at the line Links: BackdropCMS.org, GitHub
3. Hit the Github link.

Actual behavior

The link points to https://github.com/backdrop-contrib/backdrop (Page not found)

Expected behavior

Not sure. Point the link to the core repo, or don't display a link.

Additional information

• Backdrop CMS version: 1.22.0-preview

[olafgrabienski]

The issue was first reported in #5003 (comment). See especially #5003 (comment) and below for possible reasons.

[ghost]

The correct behaviour here is not to display links for core modules.

[ghost]

Here's a PR: backdrop/backdrop#4071

[argiepiano]

LGTM 👍🏽

[olafgrabienski]

Thanks for the PR, @BWPanda ! Let's make sure it goes in the 1.22 release. (Adding milestone.)

[ghost]

Thanks @olafgrabienski and @argiepiano! I've merged backdrop/backdrop#4071 into 1.x.