Update Changelog (#703)

add a deprecation note (OptimizelyFeature:experimentsMap) to Changelog

Author: yavorona

packages/optimizely-sdk/CHANGELOG.MD

@@ -10,21 +10,25 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [4.7.0] - September 15, 2021
 
 ### New Features
-- Added new public properties to OptimizelyConfig. ([#683](https://github.com/optimizely/javascript-sdk/pull/683), [#698](https://github.com/optimizely/javascript-sdk/pull/698))
+- Added new public properties to `OptimizelyConfig`. ([#683](https://github.com/optimizely/javascript-sdk/pull/683), [#698](https://github.com/optimizely/javascript-sdk/pull/698))
 	- sdkKey
 	- environmentKey
 	- attributes
 	- audiences
 	- events
-	- experimentRules and deliveryRules to OptimizelyFeature
-	- audiences to OptimizelyExperiment
+	- experimentRules and deliveryRules to `OptimizelyFeature`
+	- audiences to `OptimizelyExperiment`
 - For details, refer to our documentation page:
   - Node version: [https://docs.developers.optimizely.com/full-stack/v4.0/docs/optimizelyconfig-javascript-node](https://docs.developers.optimizely.com/full-stack/v4.0/docs/optimizelyconfig-javascript-node).
   - Browser version: [https://docs.developers.optimizely.com/full-stack/v4.0/docs/optimizelyconfig-javascript](https://docs.developers.optimizely.com/full-stack/v4.0/docs/optimizelyconfig-javascript).
 
 ### Bug fixes
 - Followed experimentIds order of experiments inside featuresMap of OptimizelyConfig ([#701](https://github.com/optimizely/javascript-sdk/pull/701))
 
+### Deprecated
+
+- `OptimizelyFeature.experimentsMap` of `OptimizelyConfig` is deprecated as of this release. Please use `OptimizelyFeature.experimentRules` and `OptimizelyFeature.deliveryRules` ([#698](https://github.com/optimizely/javascript-sdk/pull/698))
+
 ## [4.6.2] - July 15, 2021
 
 ### Bug fixes