Fix bad indent in whatsnew/3.5.rst.
diff --git a/Doc/whatsnew/3.5.rst b/Doc/whatsnew/3.5.rst
index dea8276..520bd0d 100644
--- a/Doc/whatsnew/3.5.rst
+++ b/Doc/whatsnew/3.5.rst
@@ -437,7 +437,7 @@
   subdirectories using the "``**``" pattern.
   (Contributed by Serhiy Storchaka in :issue:`13968`.)
 
-  idlelib and IDLE
+idlelib and IDLE
 ----------------
 
 Since idlelib implements the IDLE shell and editor and is not intended for