correct the comment about mis-definition of class "RCSResourceContainer" for doxygen

correct the comment about mis-definition of class "RCSResourceContainer" for doxygen

The mismatch between the real name of a class RCSResourceContainer and it's comment resulted in the wrong doxygen description .
It means that Doxygen had two seperate definitions like RCSResourceContainer and ResourceContainer.

Change-Id: I3a3647ace72b641862cd05b7d4ee2c8d98aeaf75
Signed-off-by: Rami Jung <rami.jung@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2885
Reviewed-by: Markus Jung <markus.jung@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Madan Lanka <lanka.madan@samsung.com>