Switch ID should be Id as per the docs

Author: DanielVanNoord

ASCOM.Alpaca.Simulators/Documentation/ValidAlpacaKeys.cs

@@ -9,7 +9,7 @@ internal class ValidAlpacaKeys
             "ClientTransactionID",
             "RightAscension",
             "Declination",
-            "ID",
+            "Id",
             "SensorName",
             "Axis"
         };
@@ -46,7 +46,7 @@ internal class ValidAlpacaKeys
             "TempComp",
             "AveragePeriod",
             "Reverse",
-            "ID",
+            "Id",
             "State",
             "Name",
             "Value",