[ostream.formatted.print] Remove "only" in wording for LWG4044 as per LWG discussion

Author: burblebee

source/iostreams.tex

@@ -6865,7 +6865,7 @@
 \item
 If the function is \tcode{vprint_unicode} and
 \tcode{os} is a stream that refers to a terminal that
-is only capable of displaying Unicode via a native Unicode API,
+is capable of displaying Unicode only via a native Unicode API,
 which is determined in an implementation-defined manner,
 flushes \tcode{os} and then
 writes \tcode{out} to the terminal using the native Unicode API;