Merge pull request #13793 from vertextau:tutorial-fix
authorAlexander Alekhin <alexander.a.alekhin@gmail.com>
Mon, 11 Feb 2019 12:39:35 +0000 (12:39 +0000)
committerAlexander Alekhin <alexander.a.alekhin@gmail.com>
Mon, 11 Feb 2019 12:39:35 +0000 (12:39 +0000)

Trivial merge