Minor documentation updates to Agent.

Author: jdantonio

lib/concurrent/agent.rb

@@ -46,12 +46,15 @@ class Agent
     #
     # @param [Object] initial the initial value
     # @param [Hash] opts the options used to define the behavior at update and deref
+    #
     # @option opts [Fixnum] :timeout (TIMEOUT) maximum number of seconds before an update is cancelled
+    #
     # @option opts [Boolean] :operation (false) when +true+ will execute the future on the global
     #   operation pool (for long-running operations), when +false+ will execute the future on the
     #   global task pool (for short-running tasks)
     # @option opts [object] :executor when provided will run all operations on
     #   this executor rather than the global thread pool (overrides :operation)
+    #
     # @option opts [String] :dup_on_deref (false) call +#dup+ before returning the data
     # @option opts [String] :freeze_on_deref (false) call +#freeze+ before returning the data
     # @option opts [String] :copy_on_deref (nil) call the given +Proc+ passing the internal value and