Updated Doxygen @param for OCResourceResponse::setResourceRepresentation

Updated Doxygen @param for OCResourceResponse::setResourceRepresentation

The parameter was updated in a previous commit without updating the
Doxygen comments.

Change-Id: Ia6fc35d7a7ad8c6fd8a0d076aa21915813fe2820
Signed-off-by: William Dieter <william.r.dieter@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/352
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sashi Penta <sashi.kumar.penta@intel.com>
(cherry picked from commit 50ef54a78a90638144db9fe55c1fb97b6196ff9b)
Reviewed-on: https://gerrit.iotivity.org/gerrit/356
Reviewed-by: Sudarshan Prasad <sudarshan.prasad@intel.com>