URL Broken "View documentation on the official documentation website."

[peterrenshaw]

Trivial, but I was interested in reading the official site.

What I found
Url to official documentation site is broken.

What I expect
When I click the "View documentation on the Denotrain page [official documentation website](https://doc.deno.land/https/deno.land/x/denotrain@master/mod.ts)." link located at https://github.com/Caesar2011/denotrain it should let see the official documentation website.

Reproduction
Click url as shown at bottom of page.