[Chicken-users] spiffy example

[minh thu]

Hi,

In 'Adding dynamic resources' at http://chicken.wiki.br/spiffy,
I think there are two mistakes :

- http:write-response-header should be write-response-header
- and before calling it, the current-request parameter should be
changed to the request argument.

I don't change the wiki because I'm not really sure of this (we can
use the code of the http egg example instead).

Cheers,
Thu