docs: readme: update babashka badge target (#73)

New target describes babashka badges

See babashka/babashka#1798

Author: lread

README.md

@@ -8,7 +8,7 @@
 [![Code Coverage](https://codecov.io/gh/flybot-sg/lasagna-pull/branch/master/graph/badge.svg)](https://codecov.io/gh/flybot-sg/lasagna-pull)
 [![Clojars](https://img.shields.io/clojars/v/sg.flybot/lasagna-pull.svg)](https://clojars.org/sg.flybot/lasagna-pull)
 [![CljDoc](https://cljdoc.org/badge/sg.flybot/lasagna-pull)](https://cljdoc.org/d/sg.flybot/lasagna-pull)
-[![bb compatible](https://raw.githubusercontent.com/babashka/babashka/master/logo/badge.svg)](https://babashka.org)
+[![bb compatible](https://raw.githubusercontent.com/babashka/babashka/master/logo/badge.svg)](https://book.babashka.org#badges)
 
 ## The Problem