Update feature management schema URL

Author: Albertyang0

articles/azure-app-configuration/feature-management-dotnet-reference.md

@@ -56,7 +56,7 @@ The .NET Core configuration system is used to determine the state of feature fla
 
 ### Feature Flag Declaration
 
-The feature management library supports appsettings.json as a feature flag source since it's a provider for .NET Core's `IConfiguration` system. Feature flags are declared using the [`Microsoft Feature Management schema`](https://github.com/Azure/AppConfiguration/tree/main/docs/FeatureManagement). This schema is language agnostic in origin and is supported across all Microsoft feature management libraries.
+The feature management library supports appsettings.json as a feature flag source since it's a provider for .NET Core's `IConfiguration` system. Feature flags are declared using the [`Microsoft Feature Management schema`](https://github.com/microsoft/FeatureManagement/blob/main/Schema/FeatureManagement.v2.0.0.schema.json). This schema is language agnostic in origin and is supported across all Microsoft feature management libraries.
 
 The following example declares feature flags in a json file.