- make common settings like filter 'remove_tag' use the literal plugin

name instead of the text "myfilter" in examples.

docs/docgen.rb

@@ -197,6 +197,7 @@ class LogStashConfigDocGenerator
       File.open(path, "w") do |out|
         html = template.result(binding)
         html.gsub!("%VERSION%", LOGSTASH_VERSION)
+        html.gsub!("%PLUGIN%", @name)
         out.puts(html)
       end
     else 

lib/logstash/filters/base.rb

@@ -28,7 +28,7 @@ class LogStash::Filters::Base < LogStash::Plugin
   # syntax. Example:
   #
   #     filter {
-  #       myfilter {
+  #       %PLUGIN% {
   #         add_tag => [ "foo_%{somefield}" ]
   #       }
   #     }
@@ -42,7 +42,7 @@ class LogStash::Filters::Base < LogStash::Plugin
   # syntax. Example:
   #
   #     filter {
-  #       myfilter {
+  #       %PLUGIN% {
   #         remove_tag => [ "foo_%{somefield}" ]
   #       }
   #     }
@@ -55,7 +55,7 @@ class LogStash::Filters::Base < LogStash::Plugin
   # Example:
   #
   #     filter {
-  #       myfilter {
+  #       %PLUGIN% {
   #         add_field => [ "sample", "Hello world, from %{@source}" ]
   #       }
   #     }