header.types - W3C says there is only 1-6

Trying to understand FCC now and use it in newer Projects. 
By this http://www.w3.org/wiki/HTML/Elements/h1,_h2,_h3,_h4,_h5,_and_h6 
there should be only Header Type 1-6
Merge pull request #68 from grimmcreative/patch-2

[BUGFIX] header.types only 1-6