fixup: use \brk{} to deal with overfull hbox

Co-authored-by: Jan Schultke <[email protected]>

Author: dietmarkuehl

source/exec.tex

@@ -6411,8 +6411,8 @@
 \pnum
 \returns
 If \tcode{same_as<inline_scheduler, scheduler_type>} is \tcode{true}
-returns \tcode{as_awaitable(\linebreak std::forward <Sender>(sndr), % avoid Overfull
-*this)}; otherwise returns
+returns \tcode{as_awaitable(\brk{}std::forward<Sender>(sndr), *this)};
+otherwise returns
 \tcode{as_awaitable(affine_on(\brk{}std::forward<Sender>(sndr), \exposid{SCHED}(*this)), *this)}.
 \end{itemdescr}