[macros] Avoid small caps for cross-references to C.

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

Author: jensmaurer

source/macros.tex

@@ -371,8 +371,8 @@
 \newcommand{\templalias}{\Fundesc{Alias template}}
 
 %% Cross-reference
-\newcommand{\xref}{\textsc{See also:}\space}
-\newcommand{\xrefc}[1]{\xref{} \IsoC{}, #1}
+\newcommand{\xref}{See\space}
+\newcommand{\xrefc}[1]{\xref{} \IsoC{}, #1.}
 \newcommand{\termref}[3]{\textit{#2}{#3}\iref{#1}} % in Clause 3
 
 %% Inline comma-separated parenthesized references