Update CHANGELOG.md

Author: rpagyc

src/Simplify.Web.Swagger/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [1.1.0] - 2025-10-02
+
+### Added
+
+- ContentType field in RequestBody attribute
+
 ## [1.0.0] - 2024-06-05
 
 ### Dependencies
@@ -53,4 +59,4 @@
 
 ### Added
 
-- Initial version with controllers list including response types handling
+- Initial version with controllers list including response types handling