'an' -> 'and'
Replace a no longer working link with a description of its content

The link can still be accessed through the Internet Archive at
http://liveweb.archive.org/web/20100831121909/http://sourceforge.net/tracker/index.php?func=detail&aid=1962574&group_id=80706&atid=560720
but its content can be summarized in one sentence.
Merge pull request #2940 from mineo/doc-fixes

Fix some documentation mistakes