in versioned_plugins.rb [408:415]
def write_alias_index(type, alias_name, target)
template = ERB.new(IO.read("logstash/templates/docs/versioned-plugins/alias-index.asciidoc.erb"))
output_asciidoc = "#{logstash_docs_path}/docs/versioned-plugins/#{type}s/#{alias_name}-index.asciidoc"
lazy_create_output_folder(output_asciidoc)
content = template.result_with_hash(type: type, alias_name: alias_name, target: target)
File.write(output_asciidoc, content)
end