update changelog for release (#27080)

Author: kristapratico

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

@@ -1,6 +1,6 @@
 # Release History
 
-## 5.2.1 (Unreleased)
+## 5.2.1 (2022-10-26)
 
 ### Bugs Fixed
 - Returns a more helpful message in the document error when all documents fail for an action in the `begin_analyze_actions` API.

sdk/textanalytics/azure-ai-textanalytics/README.md

@@ -86,7 +86,7 @@ This table shows the relationship between SDK versions and supported API version
 
 | SDK version  | Supported API version of service  |
 | ------------ | --------------------------------- |
-| 5.2.0 - Latest stable release | 3.0, 3.1, 2022-05-01 (default) |
+| 5.2.X - Latest stable release | 3.0, 3.1, 2022-05-01 (default) |
 | 5.1.0  | 3.0, 3.1 (default) |
 | 5.0.0  | 3.0 |