Merge pull request #18387 from jketema/change-tweak

C++: Slightly tweak change note to make it more consistent with others

Author: jketema

cpp/ql/lib/change-notes/2024-12-20-sizeof-pack.md

@@ -1,4 +1,4 @@
 ---
 category: feature
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-* New classes `SizeofPackExprOperator` and `SizeofPackTypeOperator` were introduced, which represent the C++ `sizeof...` operator taking an expression and a type argument, respectively.
+* New classes `SizeofPackExprOperator` and `SizeofPackTypeOperator` were introduced, which represent the C++ `sizeof...` operator taking expressions and type arguments, respectively.