[DataFactory] Polish and prepare for new beta release (Azure#37958)

Author: ArthurMa1978

sdk/datafactory/Azure.ResourceManager.DataFactory/CHANGELOG.md

@@ -1,14 +1,16 @@
 # Release History
 
-## 1.0.0-beta.3 (Unreleased)
+## 1.0.0-beta.3 (2023-08-02)
 
 ### Features Added
 
 - Supported the new `DataFactoryElement<T>` expression type property.
+- Upgraded API version.
 
 ### Other Changes
 
-- Upgraded API version.
+- Upgraded Azure.Core to 1.34.0.
+- Upgraded Azure.ResourceManager to 1.7.0.
 
 ## 1.0.0-beta.2 (2022-08-29)
 

sdk/datafactory/Azure.ResourceManager.DataFactory/README.md

@@ -51,7 +51,7 @@ Code samples for using the management library for .NET can be found in the follo
 #### Assign `DataFactoryElement` with different literal types
 - int
  ```C# Snippet:Readme_DataFactoryElementInt
-var policy = new ActivityPolicy
+var policy = new PipelineActivityPolicy
 {
     Retry = DataFactoryElement<int>.FromLiteral(1),
 };
@@ -82,7 +82,7 @@ Dictionary<string, string> DictionaryValue = new()
 };
 var activity = new AzureMLExecutePipelineActivity("name")
 {
-    MlPipelineParameters = DataFactoryElement<IDictionary<string, string>?>.FromLiteral(DictionaryValue),
+    MLPipelineParameters = DataFactoryElement<IDictionary<string, string>?>.FromLiteral(DictionaryValue),
 };
 ```