[meta.reflection.substitute] Add 'in order'

A misapplication of P2996R13.

Fixes NB US 115-176 (C++26 CD).

Author: jensmaurer

source/meta.tex

@@ -6007,7 +6007,8 @@
 \pnum
 Let \tcode{Z} be the template represented by \tcode{templ}
 and let \tcode{Args...} be a sequence of prvalue constant expressions
-that compute the reflections held by the elements of \tcode{arguments}.
+that compute the reflections held by the elements of \tcode{arguments},
+in order.
 
 \pnum
 \returns
@@ -6041,7 +6042,8 @@
 \pnum
 Let \tcode{Z} be the template represented by \tcode{templ}
 and let \tcode{Args...} be a sequence of prvalue constant expressions
-that compute the reflections held by the elements of \tcode{arguments}.
+that compute the reflections held by the elements of \tcode{arguments},
+in order.
 
 \pnum
 \returns