Add missing header in What's new for 3.5.2

QuLogic · QuLogic · commit 2e7af710d5a2 · 2022-05-03T18:25:02.000-04:00
diff --git a/doc/users/prev_whats_new/whats_new_3.5.2.rst b/doc/users/prev_whats_new/whats_new_3.5.2.rst
@@ -1,3 +1,16 @@
+=============================================
+What's new in Matplotlib 3.5.2 (May 02, 2022)
+=============================================
+
+For a list of all of the issues and pull requests since the last revision, see
+the :ref:`github-stats`.
+
+.. contents:: Table of Contents
+   :depth: 4
+
+.. toctree::
+   :maxdepth: 4
+
 Windows on ARM support
 ----------------------
 
