Adding missing closing tag.
Adding missing closing tag.

gitenberg-dev/HTMLBook,mushroomgithub/HTMLBook,oreillymedia/HTMLBook,macmillanpublishers/HTMLBook,macmillanpublishers/HTMLBook,wastemobile/HTMLBook,mushroomgithub/HTMLBook,mushroomgithub/HTMLBook,gitenberg-dev/HTMLBook,wastemobile/HTMLBook,macmillanpublishers/HTMLBook,oreillymedia/HTMLBook,oreillymedia/HTMLBook,gitenberg-dev/HTMLBook