My doc correction in r400842 had a silly bug.

Because I added a wiki_description to models and not their properties, the
rendered wiki page had the model description instead of the property
descriptions, which looks very silly indeed.

(closes issue ASTERISK-22705)
........

Merged revisions 400958 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@400959 f38db490-d61c-443f-a65b-d21fe96a405b