[text.encoding.members] Simplify \tcode{\exposid{name}}

Author: frederick-vs-ja

source/locales.tex

@@ -4855,7 +4855,7 @@
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{\exposid{mib_}}.
+\exposid{mib_}.
 \end{itemdescr}
 
 \indexlibrarymember{name}{text_encoding}%
@@ -4866,15 +4866,15 @@
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{\exposid{name_}} if \tcode{(\exposid{name_}[0] != '\textbackslash 0')}
+\exposid{name_} if \tcode{(\exposid{name_}[0] != '\textbackslash 0')}
 is \tcode{true}, and
 \keyword{nullptr} otherwise.
 
 \pnum
 \remarks
 If \tcode{name() == nullptr} is \tcode{false},
 \tcode{name()} is an \ntbs{} and
-accessing elements of \tcode{\exposid{name_}}
+accessing elements of \exposid{name_}
 outside of the range \countedrange{name()}{strlen(name()) + 1}
 is undefined behavior.
 \end{itemdescr}