Remove extra word
Remove references to Python 2.5 since it's not supported anymore
Fix wrong reference to non existent getAjax function
Remove extra word
Fix reST markup and spelling of "hand"
Remove extra word
Fix reST markup
my.package.MyJinja2Renderer is registered for .jinja2 files not .jinja
Fix typo that broke the reference to pyramid.events.NewRequest
Remove unused imports from code sample

The import should be done only when actually using the global registry.