[temp] Fix example to use valid expression in requires-clause.

Author: zygoloid

source/templates.tex

@@ -214,7 +214,7 @@
 in a \grammarterm{requires-clause}.
 \begin{example}
 \begin{codeblock}
-template<int N> requires N == sizeof unsigned short
+template<int N> requires N == sizeof new unsigned short
 int f();    // error: parentheses required around \tcode{==} expression
 \end{codeblock}
 \end{example}