add changes in readme.csharp.md

Author: Shane Fu

specification/storagediscovery/resource-manager/readme.csharp.md

@@ -12,4 +12,13 @@ csharp:
   client-side-validation: false
   namespace: Microsoft.StorageDiscovery
   output-folder: $(csharp-sdks-folder)/storagediscovery/management/Microsoft.StorageDiscovery/GeneratedProtocol
+directive:
+  - from: swagger-document
+    where: $.definitions.StorageDiscoveryResourceType["x-ms-enum"]
+    transform: >
+      $.name = "StorageDiscoveryResourceKind";
+  - from: swagger-document
+    where: $.definitions.StorageDiscoveryWorkspacePropertiesUpdate
+    transform: >
+      $["x-ms-client-name"] = "StorageDiscoveryWorkspacePatchProperties";
 ```