Improve how we show GitHub Repos for a post

[humphd]

In #2367 we are adding GitHub info to a post. For the repos, we decided to try only showing the repo name vs. the username/org-name + repo, due to length: telescope instead of Seneca-CDOT/telescope. However, this leads to a bit of a bug where the same repo name with different user/org shows up twice.

We should see if we can improve this situation. We only really need the username when the name of the repo repeats, for example:

[Andrewnt219]

@humphd before, the line-height of these were set to '2rem' so they collapsed on newline. This should be fixed by #2376, we can go back to display username/repo

[humphd]

Sure, let's try and see how it goes.