[cinttypes.syn] Use "," before "respectively" in wording for LWG3828.

Author: burblebee

source/iostreams.tex

@@ -18594,7 +18594,7 @@
 \item
 \tcode{intmax_t} and \tcode{uintmax_t} are not required
 to be able to represent all values of extended integer types
-wider than \tcode{long long} and \tcode{unsigned long long} respectively, and
+wider than \tcode{long long} and \tcode{unsigned long long}, respectively, and
 \item
 if and only if the type \tcode{intmax_t} designates an extended integer
 type\iref{basic.fundamental}, the following function signatures are added: