Release note for JS FM 2.1.0 (#1057)

* release note for js fm 2.1.0

* update

* Update releaseNotes/JavaScriptFeatureManagement.md

Co-authored-by: Jimmy Campbell <jimmyca@microsoft.com>

---------

Co-authored-by: Jimmy Campbell <jimmyca@microsoft.com>

Author: zhiyuanliang-ms

releaseNotes/JavaScriptFeatureManagement.md

@@ -2,6 +2,14 @@
 
 [Source code][source_code] | [Package (npm)][package] | [Samples][samples]
 
+## 2.1.0 - May 20, 2025
+
+### Enhancements
+
+* Stablized the targeting context accessor. You can configure an `ITargetingContextAccessor` when initializing the `FeatureManager` through `FeatureManagerOptions.targetingContextAccessor`. [#93](https://github.com/microsoft/FeatureManagement-JavaScript/pull/93)
+
+* Stablized the feature evaluation event properties. These properties can be obtained through the use of `createFeatureEvaluationEventProperties`, and they include:  `"Version"`, `"FeatureName"`, `"Enabled"`, `"TargetingId"`,  `"Variant`", `"VariantAssignmentReason"`, `"DefaultWhenEnabled"` and `"VariantAssignmentPercentage"`.
+
 ## 2.1.0-preview.1 - April 22, 2025
 
 ### Enhancements

releaseNotes/JavaScriptFeatureManagementApplicationInsightsBrowser.md

@@ -2,6 +2,14 @@
 
 [Source code][source_code] | [Package (npm)][package] | [Samples][samples]
 
+## 2.1.0 - May 20, 2025
+
+### Enhancements
+
+* Updated `@microsoft/feature-management` dependency to `2.1.0`.
+
+* Stablized `createTargetingTelemetryInitializer` function to enable targeting id to be attached to Application Insights telemetry. [#98](https://github.com/microsoft/FeatureManagement-JavaScript/pull/98) 
+
 ## 2.1.0-preview.1 - April 22, 2025
 
 * Updated `@microsoft/feature-management` dependency to `2.1.0-preview.1`. See the [release notes](./JavaScriptFeatureManagement.md) for more information on the changes.

releaseNotes/JavaScriptFeatureManagementApplicationInsightsNode.md

@@ -2,6 +2,15 @@
 
 [Source code][source_code] | [Package (npm)][package] | [Samples][samples]
 
+## 2.1.0 - May 20, 2025
+
+### Enhancements
+
+* Updated `@microsoft/feature-management` dependency to `2.1.0`.
+
+* Stablized `createTargetingTelemetryProcessor` function to enable targeting id to be attached to Application Insights telemetry. [#98](https://github.com/microsoft/FeatureManagement-JavaScript/pull/98) 
+
+
 ## 2.1.0-preview.1 - April 22, 2025
 
 * Updated `@microsoft/feature-management` dependency to `2.1.0-preview.1`. See the [release notes](./JavaScriptFeatureManagement.md) for more information on the changes.