bpo-45447: Add entry to What's new 3.9 (GH-31305)

(cherry picked from commit cef91ca80c41749824eca1d4b2c99731e3d5f64c)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
index 044cfc07bce9b170d50a81916cab8e1e70ddc95d..6aed8d2b5f984df6aa8862100bea942adf91ac38 100644 (file)
--- a/Doc/whatsnew/3.9.rst
+++ b/Doc/whatsnew/3.9.rst
@@ -500,6 +500,9 @@ Reedy in :issue:`40468`.)  Move the indent space setting from the Font tab to
 the new Windows tab.  (Contributed by Mark Roseman and Terry Jan Reedy in
 :issue:`33962`.)
 
+Apply syntax highlighting to `.pyi` files. (Contributed by Alex
+Waygood and Terry Jan Reedy in :issue:`45447`.)
+
 imaplib
 -------