Set default value properly

Author: okkez

README.md

@@ -40,7 +40,7 @@ Default value: `https://raw.githubusercontent.com/fluent/fluentd-website/master/
 
 Raise error if obsolete plugins are detected
 
-Default value: `no`.
+Default value: `false`.
 
 ## Copyright
 

lib/fluent/plugin/filter_obsolete_plugins.rb

@@ -27,7 +27,7 @@ class ObsoletePluginsFilter < Fluent::Plugin::Filter
       desc "Path to obsolete-plugins.yml"
       config_param :obsolete_plugins_yml, :string, default: OBSOLETE_PLUGINS_URL
       desc "Raise error if obsolete plugins are detected"
-      config_param :raise_error, :bool, default: "no"
+      config_param :raise_error, :bool, default: false
 
       def configure(conf)
         super