[lex.ccon,expr.prim.lambda.capture] Excise 'ISO' prefix

Fixes ISO/CS comment (C++23 proof)

Author: jensmaurer

source/expressions.tex

@@ -2343,7 +2343,7 @@
 or ``\tcode{* \keyword{this}}''.
 \begin{note}
 The form \tcode{[\&,\keyword{this}]} is redundant but accepted
-for compatibility with ISO \CppXIV{}.
+for compatibility with \CppXIV{}.
 \end{note}
 Ignoring appearances in
 \grammarterm{initializer}{s} of \grammarterm{init-capture}{s}, an identifier or

source/lex.tex

@@ -1568,7 +1568,7 @@
 is specified in \tref{lex.ccon.esc}.
 \begin{note}
 Using an escape sequence for a question mark
-is supported for compatibility with ISO \CppXIV{} and ISO C.
+is supported for compatibility with \CppXIV{} and \IsoC{}.
 \end{note}
 
 \begin{floattable}{Simple escape sequences}{lex.ccon.esc}