Prepare identity release 2.0.1 - update changelog date (#18408)

Prepare identity release 2.0.1 - update changelog date

Author: KarishmaGhiya

sdk/identity/identity/CHANGELOG.md

@@ -1,19 +1,15 @@
 # Release History
 
-## 2.0.1 (Unreleased)
+## 2.0.1 (2021-10-28)
 
 ### Features Added
 
 - The `ManagedIdentityCredential` now supports the Service Fabric environment.
 
-### Breaking Changes
-
 ### Bugs Fixed
 
 - Fixed a bug that caused the `AzureCliCredential` to fail on Windows. Issue [18268](https://github.com/Azure/azure-sdk-for-js/issues/18268).
 
-### Other Changes
-
 ## 2.0.0 (2021-10-15)
 
 After multiple beta releases over the past year, we're proud to announce the general availability of version 2 of the `@azure/identity` package. This version includes the best parts of v1, plus several improvements.