update whatsnew title for v3.3 release (#4939)

stephenworsley · web-flow · commit 36a7e81fe714 · 2022-08-31T16:33:30.000+01:00
diff --git a/docs/src/whatsnew/3.3.rst b/docs/src/whatsnew/3.3.rst
@@ -1,7 +1,7 @@
 .. include:: ../common_links.inc
 
-v3.3 (18 Aug 2022) [release candidate]
-**************************************
+v3.3 (1 Sep 2022)
+*****************
 
 This document explains the changes made to Iris for this release
 (:doc:`View all changes <index>`.)
