Fix reticulated type

Author: duffn

Diff for: app/api/acme/post.rb

@@ -2,7 +2,7 @@ module Acme
   class Post < Grape::API
     desc 'Creates a spline that can be reticulated.'
     params do
-      optional :reticulated, type: String, documentation: { param_type: 'body' }
+      optional :reticulated, type: Boolean, documentation: { param_type: 'body' }
     end
     resource :spline do
       post do