Carolina Powers 5c25cda519 Fix typo on tutorial.md. (#9644) ...

The absence of the word `this` will cause CodePen
to scream at you. This fix should avoid that.
(cherry picked from commit 7c1e971e7f)

2017-05-10 08:24:32 +01:00

..

tutorial.md

Fix typo on tutorial.md. (#9644)

2017-05-10 08:24:32 +01:00