update example notebooks

5 jobs for master in 57 seconds (queued for 1 second)
Status Name Job ID Coverage
  Lint
passed black #601226

00:00:15

passed cpplint #601227

00:00:13

passed flake8 #601225

00:00:22

 
  Deploy
passed pages #601228

00:00:34

failed pages:deploy

00:00:00