modify readme.typescripy.md for compute package (#19607)

Co-authored-by: ZiWei Chen (WICRESOFT NORTH AMERICA LTD) <[email protected]>

Author: kazrael2119

specification/compute/resource-manager/readme.typescript.md

@@ -10,6 +10,9 @@ typescript:
   azure-arm: true
   generate-metadata: true
 
+modelerfour:
+  treat-type-object-as-anything: true
+
 directive:
     # dynamically add a DummyOrchestrationServiceName value to the enum 
   - from: ComputeRP/virtualMachineScaleSet.json