Aligned verification step 2 on TC_DEM_2.3 to actual code and syncd te…

…st plan.

src/python_testing/TC_DEM_2_3.py

@@ -56,7 +56,7 @@ def steps_TC_DEM_2_3(self) -> list[TestStep]:
         steps = [
             TestStep("1", "Commission DUT to TH (can be skipped if done in a preceding test)"),
             TestStep("2", "TH reads from the DUT the _FeatureMap_ attribute",
-                     "Verify that the DUT response contains the _FeatureMap_ attribute. Verify StartTimeAdjustment is supported."),
+                     "Verify that the DUT response contains the _FeatureMap_ attribute. Verify StartTimeAdjustment feature is supported on the cluster. Verify PowerForecastReporting or StateForecastReporting feature is supported on the cluster."),
             TestStep("3", "TH reads TestEventTriggersEnabled attribute from General Diagnostics Cluster",
                      "Value has to be 1 (True)"),
             TestStep("4", "TH sends TestEventTrigger command to General Diagnostics Cluster on Endpoint 0 with EnableKey field set to PIXIT.DEM.TEST_EVENT_TRIGGER_KEY and EventTrigger field set to PIXIT.DEM.TEST_EVENT_TRIGGER for Start Time Adjustment Test Event",