docs(changelog): reword fragment for #1303

Co-Authored-By: Claude Opus 5.5 <[email protected]>

changelog.d/1303-wind-stale.md

@@ -1,4 +1,2 @@
-- `get_wind` says when it answers from a stale forecast run. When the model
-  upstream fails, the wind proxy keeps serving its last run; the tool now
-  returns `stale` and adds "(forecast may be stale)" instead of giving old
-  wind as current (quanticsoul4772, #1303).
+- `get_wind` flags stale forecasts (`stale`) when the wind proxy serves a
+  cached model run (quanticsoul4772, #1303).