fix "read latest version" link

[anthumchris]

404 encountered when clicking that link. Although this page is outdated, it's currently the first search result in a google search for: "command line api":

https://www.google.com/search?q=chrome+command+line+api

[Garbee]

LGTM.

Nice find and thanks for taking the time to update the reference for us. I'm not sure if anyone with merge power still reviews this repo. I'll ping them in a few days if it isn't merged.