Unsightly modal for completing a concept exercise

The “You’ve unlocked 1 concept” and “You’ve unlocked 1 exercise” are kind of squashed together. This is from the perl5 track

@dem4ron has this changed recently?

Yes, unlocked-concept was broken out into a global CSS class a couple of months ago, and the relevant classname wasn’t updated in this modal.

Fix: Fix unlocked concept class name by dem4ron · Pull Request #5973 · exercism/website · GitHub

Thanks for reporting, Glenn!