change mininum for scaling

Author: datr93

specification/desktopvirtualization/resource-manager/Microsoft.DesktopVirtualization/preview/2022-02-10-preview/desktopvirtualization.json

@@ -5197,7 +5197,7 @@
         "rampDownCapacityThresholdPct": {
           "type": "integer",
           "format": "int32",
-          "minimum": 0,
+          "minimum": 1,
           "maximum": 100,
           "description": "Capacity threshold for ramp down period."
         },