change -i to -s in user guide when needed

3 jobs for master in 58 seconds (queued for 1 second)
Status Name Job ID Coverage
  Py35
passed test-py3.5 #24092

00:00:19

91.0%
 
  Py36
passed test-py3.6 #24093

00:00:19

91.0%
 
  Py37
passed test-py3.7 #24094

00:00:18

91.0%