PR 549

Fixed md typo in Further Reading on Booleans step.

Removed duplicate link for truthy/falsy.

Updated link to ruby docs for FalseClass.

Author: roomthily

sites/en/ruby/booleans.step

@@ -109,9 +109,8 @@ explanation do
 end
 
 further_reading do
-    message "Some languages offer wiggle room about what evaluates to true or false. Ruby has very little. See [What's Truthy and Falsey in Ruby?](https://gist.github.com/jfarmer/2647362)"
-    message "[What's Truthy and Falsey in Ruby?](https://gist.github.com/jfarmer/2647362) has a more detailed walkthrough of booleans."
-    message "Ruby documentation for [true](http://ruby-doc.org/core-2.2.0/TrueClass.html) and [false]](http://ruby-doc.org/core-2.2.0/TrueClass.html)"
+    message "Some languages offer wiggle room about what evaluates to true or false. Ruby has very little. See [What's Truthy and Falsey in Ruby?](https://gist.github.com/jfarmer/2647362) for a more detailed walkthrough of booleans."
+    message "Ruby documentation for [true](http://ruby-doc.org/core-2.2.0/TrueClass.html) and [false](http://ruby-doc.org/core-2.2.0/FalseClass.html)"
 end
 
 next_step "conditionals"