docs: clarify llmock changelog entry as cosmetic

Author: jpr5

CHANGELOG.md

@@ -8,7 +8,7 @@
 
 ### Fixed
 
-- **GitHub Action: `llmock` binary reference** — `action.yml` fixtures branch invoked the old `llmock` binary name instead of `aimock`; fixed to `aimock`
+- **GitHub Action: cosmetic binary rename** — `action.yml` fixtures branch referenced the legacy `llmock` binary (still functional); updated to `aimock` for consistency
 - **GitHub Action: hardcoded URLs in docs examples** — All workflow examples now use `steps.<id>.outputs.url` instead of hardcoded `http://127.0.0.1:4010`
 
 ## [1.18.0] - 2026-05-04