docs: update changelog for integrations/azure_ai_search (#1897)

* Update changelog for integrations/azure_ai_search

* Update CHANGELOG.md

---------

Co-authored-by: Amnah199 <13835656+Amnah199@users.noreply.github.com>
Co-authored-by: Amna Mubashar <amnahkhan.ak@gmail.com>

Author: HaystackBot

integrations/azure_ai_search/CHANGELOG.md

@@ -1,11 +1,19 @@
 # Changelog
 
+## [integrations/azure_ai_search-v2.1.1] - 2025-06-04
+
+### 🐛 Bug Fixes
+
+- Correct Azure AI search _in delimiter (#1729)
+
+
 ## [integrations/azure_ai_search-v2.1.0] - 2025-06-04
 
 ### 🚀 Features
 
 - Feat: Allow full metadata field customization.`SearchField` can now be passed in `metadata_fields`. (#1893)
 
+
 ## [integrations/azure_ai_search-v2.0.2] - 2025-05-14
 
 
@@ -26,7 +34,6 @@
 
 - [**breaking**] The environment variables for AzureAIDocumentStore have been renamed for clarity. (#1597)
 
-
 ## [integrations/azure_ai_search-v1.0.0] - 2025-03-11