Typo in the [css-grid-1] spec

[jensimmons]

There's a typo in the spec, in section 3.3
https://www.w3.org/TR/css-grid-1/#grid-area-concept

It says A grid area consists of one or more adjecent grid cells., when adjecent should be spelled adjacent.

This bug was reported on Twitter by Ohans Emmanuel.
https://twitter.com/ohansemmanuel/status/885370706938277889
Thanks Ohans!

[ohansemmanuel]

Thanks @jensimmons

[ohansemmanuel]

I'll go ahead and delete the issue I filed earlier. So we don't have duplicates flying around.