12in23: Number of published exercises can get weird

The total of published exercises that appears in the sidebar of the 12in23 page can get into an odd state where the total published can exceed the number of exercises. I think this is due to counting the 2 different linked list exercises.

It is indeed what’s happening! There was an discussion about this earlier in the year on the forum, but I can’t find the post. However, this is the line responsible:

PR opened: Don't double count linked-list and simple-linked-list by ErikSchierboom · Pull Request #5829 · exercism/website · GitHub