Try to fix doc build error 5

Author: giampaolo

Misc/NEWS.d/next/Library/2026-01-19-16-45-16.gh-issue-83069.0TaeH9.rst

@@ -1,11 +1,7 @@
 :meth:`subprocess.Popen.wait`: when ``timeout`` is not ``None``, an efficient
-event-driven mechanism now waits for process termination, if available:
-
-- Linux ≥= 5.3 uses :func:`os.pidfd_open` + :func:`select.poll`
-- macOS and other BSD variants use :func:`select.kqueue`
-- Windows keeps using ``WaitForSingleObject`` (unchanged)
-
-If none of these mechanisms are available, the function falls back to the
-traditional busy loop (non-blocking call and short sleeps).
-
-Patch by Giampaolo Rodola.
+event-driven mechanism now waits for process termination, if available. Linux
+≥= 5.3 uses :func:`os.pidfd_open` + :func:`select.poll`. macOS and other BSD
+variants use :func:`select.kqueue` + ``KQ_FILTER_PROC`` + ``KQ_NOTE_EXIT``.
+Windows keeps using ``WaitForSingleObject`` (unchanged) If none of these
+mechanisms are available, the function falls back to the traditional busy loop
+(non-blocking call and short sleeps). Patch by Giampaolo Rodola.