docs(readme): Fix dead link to getting started
docs(readme): Fix dead link to getting started

close #548
videogular/videogular2,kwarismian/videogular2,kwarismian/videogular2,kwarismian/videogular2,amitkumarmahajan/videogular2,videogular/videogular2,amitkumarmahajan/videogular2,videogular/videogular2,amitkumarmahajan/videogular2