Fill in release date for 3.0.2

CHANGELOG.txt

@@ -198,8 +198,8 @@ Changelog
  * Fix: Remove outdated reference to Image.LoaderError (Matt Westcott)
 
 
-3.0.2 (xx.xx.xxxx) - IN DEVELOPMENT
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+3.0.2 (30.08.2022)
+~~~~~~~~~~~~~~~~~~
 
  * Fix: Ensure string representation of `FormSubmission` returns a string (LB (Ben Johnston))
  * Fix: Fix `updatemodulepaths` command for Python 3.7 (Matt Westcott)

docs/releases/3.0.2.md

@@ -1,6 +1,6 @@
 # Wagtail 3.0.2 release notes
 
-_unreleased_
+_August 30, 2022_
 
 ```{contents}
 ---