docs: update release notes

Author: luohf-infinilabs

docs/content.en/docs/release-notes/_index.md

@@ -18,7 +18,7 @@ Information about release notes of INFINI Agent is provided here.
 
 ### Improvements
 - Add metrics enable to the main config (#23)
-- 
+
 ## 1.28.2 (2025-02-15)
 
 This release includes updates from the underlying [Framework v1.1.2](https://docs.infinilabs.com/framework/v1.1.2/docs/references/http_client/), which resolves several common issues and enhances overall stability and performance. While there are no direct changes to Agent itself, the improvements inherited from Framework benefit Agent indirectly.