FIXUP LWG3343: Keep "sequenced after" on same line (as per review request)

Author: burblebee

source/threads.tex

@@ -9521,8 +9521,8 @@
 Transfers ownership of the lock associated with \tcode{lk} into
 internal storage and schedules \tcode{cond} to be notified when the current
 thread exits.
-This notification is sequenced
-after all objects with thread storage duration associated with
+This notification is sequenced after
+all objects with thread storage duration associated with
 the current thread have been destroyed and
 is equivalent to:
 \begin{codeblock}