Update HTML with improved semantics on Routes and Templates tutorial.
Update HTML with improved semantics on Routes and Templates tutorial.

tleskin/guides,skaterdav85/guides,vikram7/guides,tleskin/guides,jkarsrud/guides,knownasilya/guides,davidpett/guides,skaterdav85/guides,bmac/guides,jkarsrud/guides,skaterdav85/guides,ubuntuvim/guides,nicobot/guides,greyhwndz/guides,ubuntuvim/guides,greyhwndz/guides,HeroicEric/guides,boztek/guides,jkarsrud/guides,bmac/guides,bmac/guides,MarkMT/guides,MarkMT/guides,vikram7/guides,davidpett/guides,davidpett/guides,MarkMT/guides,bmac/guides,vikram7/guides,tleskin/guides,HeroicEric/guides,skaterdav85/guides,boztek/guides,greyhwndz/guides,ubuntuvim/guides,ubuntuvim/guides,MarkMT/guides,boztek/guides,knownasilya/guides,HeroicEric/guides,nicobot/guides,knownasilya/guides,davidpett/guides,jkarsrud/guides,knownasilya/guides,nicobot/guides