bpo-37309: Update IDLE NEWS.txt (GH-20356)

miss-islington · terryjreedy · web-flow · commit 21a9af193c35 · 2020-05-24T07:16:09.000-07:00
(cherry picked from commit 16ef324) Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
@@ -4,6 +4,7 @@ Released on 2020-10-05?
 
 
 bpo-40723: Make test_idle pass when run after import.
+Patch by Florian Dahlitz.
 
 bpo-38689: IDLE will no longer freeze when inspect.signature fails
 when fetching a calltip.
