fix: wrong filename for "Get started" vignette

Refs #79
2 jobs for 79-remove-the-file-airgriwrm-rmd-from-the-vignettes in 4 minutes and 20 seconds (queued for 9 seconds)
Status Name Job ID Coverage
  Checks
passed check #265285
docker

00:04:20

passed test_all #265284
docker

00:00:39