prepare first beta release (Azure#33806)

Author: fengzhou-msft

sdk/mobilenetwork/Azure.ResourceManager.MobileNetwork/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.0.0-beta.1 (Unreleased)
+## 1.0.0-beta.1 (2023-02-01)
 
 ### General New Features
 
@@ -14,4 +14,4 @@ This package follows the [new Azure SDK guidelines](https://azure.github.io/azur
 
 This package is a Public Preview version, so expect incompatible changes in subsequent releases as we improve the product. To provide feedback, submit an issue in our [Azure SDK for .NET GitHub repo](https://github.com/Azure/azure-sdk-for-net/issues).
 
-> NOTE: For more information about unified authentication, please refer to [Microsoft Azure Identity documentation for .NET](https://docs.microsoft.com//dotnet/api/overview/azure/identity-readme?view=azure-dotnet).
+> NOTE: For more information about unified authentication, please refer to [Microsoft Azure Identity documentation for .NET](https://docs.microsoft.com//dotnet/api/overview/azure/identity-readme?view=azure-dotnet).

sdk/mobilenetwork/Azure.ResourceManager.MobileNetwork/src/Azure.ResourceManager.MobileNetwork.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <Version>1.0.0-beta.1</Version>
     <PackageId>Azure.ResourceManager.MobileNetwork</PackageId>