Align TUTORIAL.it to the English version

* etc/tutorials/TUTORIAL.it: Reference 'describe-command' to replicate
recent change.  Add also a space before '<Invio>' in several places,
mimicking the usage of <Return> in the English version (bug#48183).
10 jobs for master in 187 minutes and 35 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Prep Images
passed #18700
prep-image-base

00:04:53

 
  Build Images
passed #18701
build-image-inotify

00:25:51

 
  Platform Images
passed #18702
build-image-filenotify-gio

02:00:34

passed #18703
build-image-gnustep

02:35:18

 
  Platforms
failed #18704
test-filenotify-gio

00:20:11

passed #18705
test-gnustep

00:01:32

 
  Slow
skipped #18706
build-native-bootstrap-speed0
skipped #18707
build-native-bootstrap-speed1
skipped #18708
build-native-bootstrap-speed2
skipped #18709
test-all-inotify
 
Name Stage Failure
failed
test-filenotify-gio Platforms

make: Leaving directory '/checkout/test'
Running after_script
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
test-filenotify-gio-73513c36
Cleaning up file based variables
ERROR: Job failed: exit code 2