Python: Update change note

Co-authored-by: Aditya Sharad <6874315+adityasharad@users.noreply.github.com>

Author: tausbn

python/ql/lib/change-notes/2025-02-11-fix-match-literal-pruning.md

@@ -2,4 +2,4 @@
 category: fix
 ---
 
-- `MatchLiteralPattern`s are now never pruned, as this could lead to code being wrongly identified as unreachable.
+- `MatchLiteralPattern`s such as `case None: ...` are now never pruned from the extracted source code. This fixes some situations where code was wrongly identified as unreachable.