[Azure CXP]Updated the Az CLI command

[SatishBoddu-MSFT]

Related documentation: https://docs.microsoft.com/en-us/cli/azure/dt/role-assignment?view=azure-cli-latest#az-dt-role-assignment-create-examples

Resolves# https://github.com/Azure/azure-sdk-for-python/issues/23234

[opbld32]

Docs Build status updates of commit 939241e:

:warning: Validation status: warnings

File	Status	Preview URL	Details
docs-ref-services/latest/digitaltwins-core-readme.md	:warning:Warning	View (azure-python)	Details

docs-ref-services/latest/digitaltwins-core-readme.md

• Line 2, Column 1: [Warning: ms-prod-and-service - See documentation] Only one of the following attributes can exist: 'ms.prod', 'ms.service'. Use ms.prod for on-premise products, or ms.service for cloud services.
• Line 9, Column 16: [Warning: ms-prod-technology-invalid - See documentation] Invalid value for 'ms.technology': 'azure' is not valid with 'ms.prod' value 'azure'.
• Line 11, Column 13: [Warning: ms-service-subservice-invalid - See documentation] Invalid value for 'ms.service': 'digitaltwins'.
• Line 2, Column 1: [Suggestion: description-missing - See documentation] Missing required attribute: 'description'.
• Line 23, Column 549: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/overview' will be broken in isolated environments. Replace with a relative link.
• Line 25, Column 90: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/tutorial-code' will be broken in isolated environments. Replace with a relative link.
• Line 25, Column 213: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/tutorial-command-line-app' will be broken in isolated environments. Replace with a relative link.
• Line 25, Column 566: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/tutorial-end-to-end' will be broken in isolated environments. Replace with a relative link.
• Line 45, Column 36: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/dotnet/api/azure.core.tokencredential?view=azure-dotnet' will be broken in isolated environments. Replace with a relative link.
• Line 45, Column 36: [Suggestion: preserve-view-not-set - See documentation] Did you mean to link to a specific version? If so, add &preserve-view=true to the URL: https://docs.microsoft.com/dotnet/api/azure.core.tokencredential?view=azure-dotnet
• Line 45, Column 141: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/dotnet/api/microsoft.rest.serviceclientcredentials?view=azure-dotnet' will be broken in isolated environments. Replace with a relative link.
• Line 45, Column 141: [Suggestion: preserve-view-not-set - See documentation] Did you mean to link to a specific version? If so, add &preserve-view=true to the URL: https://docs.microsoft.com/dotnet/api/microsoft.rest.serviceclientcredentials?view=azure-dotnet
• Line 46, Column 62: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/dotnet/api/azure.identity.defaultazurecredential?view=azure-dotnet' will be broken in isolated environments. Replace with a relative link.
• Line 46, Column 62: [Suggestion: preserve-view-not-set - See documentation] Did you mean to link to a specific version? If so, add &preserve-view=true to the URL: https://docs.microsoft.com/dotnet/api/azure.identity.defaultazurecredential?view=azure-dotnet
• Line 74, Column 58: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/' will be broken in isolated environments. Replace with a relative link.
• Line 212, Column 68: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/concepts-query-language' will be broken in isolated environments. Replace with a relative link.
• Line 215, Column 45: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://docs.microsoft.com/azure/digital-twins/how-to-query-graph#query-limitations' will be broken in isolated environments. Replace with a relative link.

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