Old docs link redirect to https://tutorial/tutorial.html

[gaearon]

Moved from facebook/react#11130.
Original issue by @damaera.

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if you open this link (old documentation link)
http://facebook.github.io/react/docs/tutorial.html or https://reactjs.org/docs/tutorial.html
it will redirect to
https://tutorial/tutorial.html

it should redirect to current documentation URL --> https://reactjs.org/tutorial/tutorial.html