Fix 3.11 what's new formatting (GH-31763)

Author: Fidget-Spinner

Doc/whatsnew/3.11.rst

@@ -65,10 +65,15 @@ Summary -- Release highlights
 
 .. PEP-sized items next.
 
-PEP-654: Exception Groups and ``except*``.
-(Contributed by Irit Katriel in :issue:`45292`.)
-PEP-673: ``Self`` Type.
-(Contributed by James Hilton-Balfe and Pradeep Kumar in :issue:`30924`.)
+New syntax features:
+
+* :pep:`654`: Exception Groups and ``except*``.
+  (Contributed by Irit Katriel in :issue:`45292`.)
+
+New typing features:
+
+* :pep:`673`: ``Self`` Type.
+  (Contributed by James Hilton-Balfe and Pradeep Kumar in :issue:`30924`.)
 
 New Features
 ============