[turba] Patch for Renderer.php

[Chuck Hagenbuch]

Quoting Jeff Graves <jeff at image-src.com>:

> Since menuitem refers to the categorytree and top menubar, I think
> this should be smallheader:

'widget' fits better; thanks for the prompt to fix it.

-chuck

--
Charles Hagenbuch, <chuck at horde.org>
"... It is not more light we need, but more warmth! We die of cold, not of
darkness. It is not the night that kills, but the frost." - Miguel de Unamuno