[const.wrap.class] Add missing \exposid

Author: tkoeppe

source/meta.tex

@@ -654,7 +654,7 @@
 template<class T>
 struct @\exposidnc{cw-fixed-value}@ {                                                         // \expos
   using @\exposidnc{type}@ = T;                                                               // \expos
-  constexpr @\exposidnc{cw-fixed-value}@(type v) noexcept : data(v) {}
+  constexpr @\exposidnc{cw-fixed-value}@(@\exposidnc{type}@ v) noexcept : @\exposidnc{data}@(v) {}
   T @\exposidnc{data}@;                                                                       // \expos
 };