Small typo in GENERIC_422_UNSUPPORTED_DEVICE_IDENTIFIERS - example

[maxl2287]

Problem description
Incorrect reading in "Supported device supported are: ..."

            GENERIC_422_UNSUPPORTED_DEVICE_IDENTIFIERS:
              summary: None of the provided device identifiers is supported by the implementation
              description: Message may list the supported device identifiers
              value:
                status: 422
                code: UNSUPPORTED_DEVICE_IDENTIFIERS
                message: "Supported device supported are: ..."

Expected behavior

message: "Supported device identifiers are: ..."

Alternative solution

Without listing the supported device identifiers.

            GENERIC_422_UNSUPPORTED_DEVICE_IDENTIFIERS:
              summary: None of the provided device identifiers is supported by the implementation
              description: Message identifies that none of the provided device identifiers are supported
              value:
                status: 422
                code: UNSUPPORTED_DEVICE_IDENTIFIERS
                message: None of the provided device identifiers is supported by the implementation

[jlurien]

It was copied from https://github.com/camaraproject/QualityOnDemand/blob/main/code/API_definitions/qod-provisioning.yaml#L963, we should open an issue there too, fyi @hdamker

As messages in errors are not normative, and implementations may return whatever other value, I think it is not strictly necessary to fix the past release for this, but if we have to make other fixes we can add it as well. But it is ok to fix the main branch in any case. This subcase of 422 was not listed in Commonalities but it would make sense to have a common example there.