Turbogears 2 used kajiki template (xhtml to html)

I used Turbogears 2.4 and update to Turbogears 2.8 (Default kajiki template). I want to change Genshi to Kajiki template. I found than I change html to xhtml for kajiki templates. So I don't change It. I search Turbogears Document, In development.ini file 

#config change default extension of kajiki(.xhtml) to .html
templating.kajiki.template_extension = .html

and change base_config.renderes in  app_cfg.py

# Set the default renderer
base_config.renderers.append('kajiki')
# Set the default renderer
base_config.default_renderer = 'kajiki'


But It's not easy, In HTML file I want to change kajiki format. I read it http://turbogears.readthedocs.io/en/latest/turbogears/kajiki-xml-templates.html