Broken XSS link

```
In the section: http://code.google.com/p/browsersec/wiki/Part1
the link Cross-site scripting pointing to:
http://code.google.com/p/doctype/wiki/ArticlesXSS
is broken.

Currently the valid destination is:
http://code.google.com/p/doctype-mirror/wiki/ArticleXSS
```

Original issue reported on code.google.com by `ecasbas` on 7 Jan 2013 at 6:48
