update changelog (Azure#26591)

Author: Yao725

sdk/storagepool/Azure.ResourceManager.StoragePool/CHANGELOG.md

@@ -1,7 +1,7 @@
 # Release History
 
-## 1.0.0-beta.1 (Unreleased)
+## 1.0.0-beta.1 (2022-01-25)
 
 This package follows the [Azure SDK Design Guidelines for .NET](https://azure.github.io/azure-sdk/dotnet_introduction.html) which provide a number of core capabilities that are shared amongst all Azure SDKs, including the intuitive Azure Identity library, an HTTP Pipeline with custom policies, error-handling, distributed tracing, and much more.
 
-This is a Public Preview version, so expect incompatible changes in subsequent releases as we improve the product. To provide feedback, please submit an issue in our [Azure SDK for .NET GitHub repo](https://github.com/Azure/azure-sdk-for-net/issues).
+This is a Public Preview version, so expect incompatible changes in subsequent releases as we improve the product. To provide feedback, please submit an issue in our [Azure SDK for .NET GitHub repo](https://github.com/Azure/azure-sdk-for-net/issues).