CWG2644 Incorrect comment in example

Fixes NB US 042 (C++23 CD).

Author: burblebee

source/expressions.tex

@@ -2358,7 +2358,7 @@
             return x+2;
          }();                               // Updates \tcode{::x} to 6, and initializes \tcode{y} to 7.
 
-auto z = [a = 42](int a) { return 1; };     // error: parameter and local variable have the same name
+auto z = [a = 42](int a) { return 1; };     // error: parameter and conceptual local variable have the same name
 auto counter = [i=0]() mutable -> decltype(i) {     // OK, returns \tcode{int}
   return i++;
 };