style: fix changelog

changes/v5.0.12-en.md

@@ -20,4 +20,4 @@
 
 - Fix that the obsolete SSL files aren't deleted after the ExHook config update [#9432](https://github.com/emqx/emqx/pull/9432).
 
-- Fix schema for `GET /trace/:name/log` [#9468](https://github.com/emqx/emqx/pull/9468).
+- Fix doc and schema for `/trace` API [#9468](https://github.com/emqx/emqx/pull/9468).

changes/v5.0.12-zh.md

@@ -19,4 +19,4 @@
 
 - 修复 ExHook 更新 SSL 相关配置后，过时的 SSL 文件没有被删除的问题 [#9432](https://github.com/emqx/emqx/pull/9432)。
 
-- [FIXME] Fix schema for `GET /trace/:name/log` [#9468](https://github.com/emqx/emqx/pull/9468).
+- [FIXME] Fix doc and schema for `/trace` API [#9468](https://github.com/emqx/emqx/pull/9468).