Updated docs link for 2.0.0-dev

Author: quexpl

README.md

@@ -7,7 +7,7 @@ An authorization library in Elixir for `Plug` and `Phoenix.LiveView` application
 
 Inspired by [CanCan](https://github.com/CanCanCommunity/cancancan) for Ruby on Rails.
 
-[Read the docs](http://hexdocs.pm/canary)
+[Read the docs](https://hexdocs.pm/canary/2.0.0-dev/)
 
 # Canary 2.0.0