Fix docs typo (setMulti returns CAS values not boolean).

Change-Id: Id408fb8c3790094a02aa47fde84ced4189fb3827
Reviewed-on: http://review.couchbase.org/36558
Reviewed-by: Mark Nunberg <mnunberg@haskalah.org>
Tested-by: Brett Lawson <brett19@gmail.com>

Author: brett19

example/couchbase-api.php

@@ -256,7 +256,7 @@ function set($id, $document, $expiry = 0, $cas = "", $persist_to = 0, $replicate
      *                            this many nodes
      * @param integer $replicate_to wait until the document is replicated to (at least)
      *                            this many nodes
-     * @return boolean true if success
+     * @return array list of CAS's for stored values
      * @throws CouchbaseException if an error occurs
      */
     function setMulti($documents, $expiry = 0, $persist_to = 0, $replicate_to = 0) {