Make the code match the narrative

Spotted by the Mr. Eagle Eye, @videlalvaro.

Author: Michael Klishin

ruby/worker.rb

@@ -16,7 +16,7 @@
   q.subscribe(:manual_ack => true, :block => true) do |delivery_info, properties, body|
     puts " [x] Received '#{body}'"
     # imitate some work
-    sleep 1.0
+    sleep body.count(".").to_i
     puts " [x] Done"
     ch.ack(delivery_info.delivery_tag)
   end