modify directory of scenarios

Change-Id: I2be71297d4a401de5e4f4f649974606f1787bef3
Signed-off-by: CNlucius <lukai1@huawei.com>

diff --git a/docs/releasenotes/index.rst b/docs/scenarios/os-onos-nofeature-sfc/index.rst
similarity index 100%
rename from docs/releasenotes/index.rst
rename to docs/scenarios/os-onos-nofeature-sfc/index.rst

diff --git a/docs/releasenotes/scenario-description.rst b/docs/scenarios/os-onos-nofeature-sfc/scenario-description.rst
similarity index 100%
rename from docs/releasenotes/scenario-description.rst
rename to docs/scenarios/os-onos-nofeature-sfc/scenario-description.rst