[locale.categories.general] Add \tcode for OutputIterator

Author: Andreas-Krug

source/text.tex

@@ -1305,7 +1305,7 @@
 
 \pnum
 The \tcode{put()} members make no provision for error reporting.
-(Any failures of the OutputIterator argument can be extracted from
+(Any failures of the \tcode{OutputIterator} argument can be extracted from
 the returned iterator.)
 The \tcode{get()} members take an \tcode{ios_base::iostate\&} argument
 whose value they ignore,