Adding Call Automation Public Preview Beta1

Author: minwoolee-msft

articles/communication-services/concepts/reference.md

@@ -22,6 +22,7 @@ For each area, we have external pages to track and review our SDKs. You can cons
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 | Azure Resource Manager | -                                                                           | [NuGet](https://www.nuget.org/packages/Azure.ResourceManager.Communication)  | [PyPi](https://pypi.org/project/azure-mgmt-communication/)            | -                                                                                 | -                                                                                                               | -                                                                                         | [Go via GitHub](https://github.com/Azure/azure-sdk-for-go/releases/tag/v46.3.0) |
 | Calling                | [npm](https://www.npmjs.com/package/@azure/communication-calling)           | -                                                                            | -                                                                     | -                                                                                 | [GitHub](https://github.com/Azure/Communication/releases) ([docs](/objectivec/communication-services/calling/)) | [Maven](https://search.maven.org/artifact/com.azure.android/azure-communication-calling/) | -                                                                               |
+| Call Automation                   |        -       | [NuGet](https://www.nuget.org/packages/Azure.Communication.CallAutomation)             |     -        | [Maven](https://search.maven.org/search?q=a:azure-communication-callautomation)             |                  -                                  |        -              | -                                                                               |
 | Chat                   | [npm](https://www.npmjs.com/package/@azure/communication-chat)              | [NuGet](https://www.nuget.org/packages/Azure.Communication.Chat)             | [PyPi](https://pypi.org/project/azure-communication-chat/)            | [Maven](https://search.maven.org/search?q=a:azure-communication-chat)             | [GitHub](https://github.com/Azure/azure-sdk-for-ios/releases)                                                   | [Maven](https://search.maven.org/search?q=a:azure-communication-chat)                     | -                                                                               |
 | Common                 | [npm](https://www.npmjs.com/package/@azure/communication-common)            | [NuGet](https://www.nuget.org/packages/Azure.Communication.Common/)          | N/A                                                                   | [Maven](https://search.maven.org/search?q=a:azure-communication-common)           | [GitHub](https://github.com/Azure/azure-sdk-for-ios/releases)                                                   | [Maven](https://search.maven.org/artifact/com.azure.android/azure-communication-common)   | -                                                                               |
 | Email                    | [npm](https://www.npmjs.com/package/@azure/communication-email)               | [NuGet](https://www.nuget.org/packages/Azure.Communication.Email)               | [PyPi](https://pypi.org/project/azure-communication-email/)             | [Maven](https://search.maven.org/artifact/com.azure/azure-communication-email)      | -                                                                                                               | -                                                                                         | -                                                                               |