docs/mongo/README.md in flipper-mongo-0.21.0.rc1 vs docs/mongo/README.md in flipper-mongo-0.21.0.rc2

@@ -26,12 +26,12 @@
 
 **If you need to customize the adapter**, you can add this to an initializer:
 
 ```ruby
 Flipper.configure do |config|
-  config.default do
+  config.adapter do
     collection = Mongo::Client.new(ENV["MONGO_URL"])["flipper"]
-    Flipper.new(Flipper::Adapters::Mongo.new(collection))
+    Flipper::Adapters::Mongo.new(collection)
   end
 end
 ```
 
 ## Internals