Update code comment

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@9700 5227b50d-9349-4574-b055-4b0a7525e11c
Tagger: avoid API call to get category count if page has 5 or more categories on it

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@9701 5227b50d-9349-4574-b055-4b0a7525e11c