testbase has a `provisioningState` of `Cancelled`

The spelling should be `Canceled`. To fix this, the specification should add `Canceled` and the service should return `Canceled` instead of `Cancelled`. See https://github.com/Azure/azure-resource-manager-rpc/issues/144 for details.

An example:

https://github.com/Azure/azure-rest-api-specs/blob/fa581bd5f31cbc6f6882b254ce5b0f5c20d84648/specification/testbase/resource-manager/Microsoft.TestBase/preview/2022-04-01-preview/testbase.json#L2899-L2915

Open specification/testbase/resource-manager/Microsoft.TestBase/preview/2022-04-01-preview/testbase.json around lines 2899-2915 and inspect the provisioningState definition. Compare it with the referenced RPC issue, then verify the specification uses Canceled and that the service behavior is covered by the repository's available validation process.

Written by the indexing model from the issue text.