The vignettes chapter links to replication crisis but talks about reproducibility

[svenvanderburg]

The link in the vignettes chapter links to the wikipedia page about replicaiton crisis, but the text is about reproducibiliy. I think we may need to be explicit about the difference between replication and reproducibility in science to be complete. Maybe we should just call it the replication crisis. It would be great if the lesson file could be amended to reflect this.