[range.transform.iterator] Add missing \exposid formatting

Author: jensmaurer

source/ranges.tex

@@ -4573,7 +4573,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Equivalent to: \tcode{return std::move(current_);}
+Equivalent to: \tcode{return std::move(\exposid{current_});}
 \end{itemdescr}
 
 \indexlibrarymember{operator++}{transform_view::iterator}%
@@ -4599,7 +4599,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Equivalent to \tcode{++current_}.
+Equivalent to \tcode{++\exposid{current_}}.
 \end{itemdescr}
 
 \indexlibrarymember{operator++}{transform_view::iterator}%
@@ -4764,7 +4764,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Equivalent to: \tcode{return iterator\{*i.\exposid{parent_}, i.\exposid{current_} + n\};}
+Equivalent to: \tcode{return \exposid{iterator}\{*i.\exposid{parent_}, i.\exposid{current_} + n\};}
 \end{itemdescr}
 
 \indexlibrarymember{operator-}{transform_view::iterator}%
@@ -4776,7 +4776,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Equivalent to: \tcode{return iterator\{*i.\exposid{parent_}, i.\exposid{current_} - n\};}
+Equivalent to: \tcode{return \exposid{iterator}\{*i.\exposid{parent_}, i.\exposid{current_} - n\};}
 \end{itemdescr}
 
 \indexlibrarymember{operator-}{transform_view::iterator}%