Properly italicize the term 'delete array', as done elsewhere

Author: Aaron Ballman

source/expressions.tex

@@ -3672,8 +3672,8 @@
 If the deallocation functions have class scope,
 the one without a parameter of type \tcode{std::size_t} is selected.
 \item
-If the type is complete and if, for the second alternative (delete
-array) only, the operand is a pointer to a class type with a
+If the type is complete and if, for the second alternative
+(\term{delete array}) only, the operand is a pointer to a class type with a
 non-trivial destructor or a (possibly multi-dimensional) array thereof,
 the function with a parameter of type \tcode{std::size_t} is selected.
 \item