[cstdint.syn] Use "declare" for typedef-names

Author: frederick-vs-ja

source/support.tex

@@ -1979,10 +1979,10 @@
 are also optional;
 however, if an implementation defines integer types
 with the corresponding width and no padding bits,
-it defines the corresponding \grammarterm{typedef-name}s.
+it declares the corresponding \grammarterm{typedef-name}s.
 Each of the macros listed in this subclause
 is defined if and only if
-the implementation defines the corresponding \grammarterm{typedef-name}.
+the implementation declares the corresponding \grammarterm{typedef-name}.
 \begin{note}
 The macros \tcode{INT\placeholdernc{N}_C} and \tcode{UINT\placeholdernc{N}_C}
 correspond to the \grammarterm{typedef-name}s