Added * to comment to allow it to be used by phpdoc.

Change-Id: I913e5267a66c75f8e57390912c3cc595f6dc5784
Reviewed-on: http://review.couchbase.org/29338
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Tested-by: Brett Lawson <brett19@gmail.com>