Broken link on github

Hello group, on the github home (https://github.com/w3c/publ-bg) you will find a broken link at the bottom.

The home page should be: https://w3c.github.io/publ-bg/docs/EPUB4_business_case.html (there is an "L" missing there)

Hope I can help!

(I will be writing about this group and initiative on http://plumdesignpublishing.com/ -- I'll let you know)