C++: Correct QLDoc.

Author: geoffw0

cpp/ql/src/semmle/code/cpp/models/implementations/Allocation.qll

@@ -216,8 +216,8 @@ class SizelessAllocationFunction extends AllocationFunction {
 }
 
 /**
- * An `operator new` or `operator new[]` function that may be associated with a `new` or
- * `new[]` expression.  Note that `new` and `new[]` are not function calls, but these
+ * An `operator new` or `operator new[]` function that may be associated with `new` or
+ * `new[]` expressions.  Note that `new` and `new[]` are not function calls, but these
  * functions may also be called directly.
  */
 class OperatorNewAllocationFunction extends AllocationFunction {

cpp/ql/src/semmle/code/cpp/models/implementations/Deallocation.qll

@@ -81,7 +81,7 @@ class StandardDeallocationFunction extends DeallocationFunction {
 
 /**
  * An `operator delete` or `operator delete[]` function that may be associated
- * with a `delete` or `delete[]` expression.  Note that `delete` and `delete[]`
+ * with `delete` or `delete[]` expressions.  Note that `delete` and `delete[]`
  * are not function calls, but these functions may also be called directly.
  */
 class OperatorDeleteDeallocationFunction extends DeallocationFunction {