Prepare for 1.0.0b3 Release of Evaluation SDK (#37673)

* Prepare for 1.0.0b3 Evaluation Release

* remove a blank space

Author: needuv

sdk/evaluation/azure-ai-evaluation/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 1.0.0b3 (Unreleased)
+## 1.0.0b3 (2024-10-01)
 
 ### Features Added
 
@@ -20,7 +20,6 @@
 
 ### Breaking Changes
 
-
 - Removed `ContentSafetyChatEvaluator` and `ChatEvaluator`
 - The `evaluator_config` parameter of `evaluate` now maps in evaluator name to a dictionary `EvaluatorConfig`, which is a `TypedDict`. The
 `column_mapping` between `data` or `target` and evaluator field names should now be specified inside this new dictionary:
@@ -59,8 +58,6 @@ evaluate(
 
 - Fixed issue where Entra ID authentication was not working with `AzureOpenAIModelConfiguration` 
 
-### Other Changes
-
 ## 1.0.0b2 (2024-09-24)
 
 ### Breaking Changes