chore: add EOF newline

Author: ammgws

Misc/NEWS.d/next/Windows/2021-10-29-15-02-46.bpo-30082.VhSkKB.rst

@@ -1,3 +1,3 @@
 Adds new ``force_hide`` argument to :mod:`subprocess` functions.
 This passes ``SW_HIDE`` to the new process, which most applications
-will use to not display any window even if they normally would.
+will use to not display any window even if they normally would.