Rust: Fix typo in change note

Co-authored-by: Geoffrey White <40627776+geoffw0@users.noreply.github.com>

Author: paldepind

rust/ql/lib/change-notes/2025-12-11-read-as-taint.md

@@ -1,4 +1,4 @@
 ---
 category: minorAnalysis
 ---
-* Reading content of a value now carry taint if the value itself is tainted. For instance, if `s` is tainted then `s.field` is also tainted. This generally improves taint flow.
+* Reading content of a value now carries taint if the value itself is tainted. For instance, if `s` is tainted then `s.field` is also tainted. This generally improves taint flow.