am d093ad1a: am 7abeba63: am 0d53fcad: am d642f829: am 54dee349: docs: Fixed broken urls in the UI testing training main page and revised intro to the \'Testing UI for a Single App\' class.

* commit 'd093ad1af148a6b5b444cf6cf18b865cad731365':
  docs: Fixed broken urls in the UI testing training main page and revised intro to the 'Testing UI for a Single App' class.