Ahh i call foul on the subjects, because there is a Talk link
Not sure if this will rehash old ground but my thoughts are that the Community is rather broad subject but Wiki (or Documentation subject) is a subject in its own right. For new people visiting this site the documentation should be their first port of call and also reduce the excessive posting in the forum on topics covered in the wiki. I would say that even novice users upon seeing a link to the wiki would associate it with a knowledge base due to Wikipedia popularity.