[expr.reflect] Add missing \grammarterm, and add space in example

Author: tkoeppe

source/expressions.tex

@@ -6670,7 +6670,7 @@
 \begin{codeblock}
 static_assert(std::meta::is_type(^^int()));     // \tcode{\caret\caret} applies to the type-id \tcode{int()}
 
-template<bool>struct X {};
+template<bool> struct X {};
 consteval bool operator<(std::meta::info, X<false>) { return false; }
 consteval void g(std::meta::info r, X<false> xv) {
   r == ^^int && true;       // error: \tcode{\caret\caret} applies to the \grammarterm{type-id} \tcode{int\&\&}
@@ -6692,7 +6692,7 @@
 If a \grammarterm{reflect-expression} $R$ matches
 the form \tcode{\caret\caret \grammarterm{reflection-name}},
 it is interpreted as such;
-the identifier is looked up and
+the \grammarterm{identifier} is looked up and
 the representation of $R$ is determined as follows:
 \begin{itemize}
 \item