Update history docs

Author: timsavage

HISTORY

@@ -1,7 +1,7 @@
 2.4
 ===
 
-- Add contrib.rich to provide pre-built rich integration for pretty resources on the CLI.
+- Add contrib.rich to provide pre-built rich integration for rendering ``ValidationErrors`` as a tree
 - Improve ValidationError
     - Add ``for_field`` class method to simplify creating an exception related to a specific field.
     - Improve type annotations