The introduction of the High Score Board exercise that covers OOP points to this MDN page about JS classes. I think it would be better to link to a different MDN page that explains OOP in general.
The original link would be more appropriate in the introduction of an exercise covering JS classes.
I think this change makes sense. You can recreate your PR, link it here, and link this topic in your PR. Someone (like me) can then re-open it and have the change merged.