dwt2 revison 45, typo in Rake file

[Frank Benoit]

yidabu schrieb:
> Building jfacesnippets[Snippet001TableViewer]
> rake aborted!
> No such file or directory - /dwt2/org.eclipse.jface.snippets/src
> dwt2/rakefile:220:in `chdir'
> (See full trace by running task with --trace)
> 
> with current revision.

this should be fixed meanwhile.