Issue #23006: Improve the documentation and indexing of dict.__missing__.
Add an entry in the language datamodel special methods section.
Revise and index its discussion in the stdtypes mapping/dict section.
Backport the code example from 3.4.
diff --git a/Misc/NEWS b/Misc/NEWS
index 6d0f3eb..6f4e552 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -30,6 +30,11 @@
Documentation
-------------
+- Issue #23006: Improve the documentation and indexing of dict.__missing__.
+ Add an entry in the language datamodel special methods section.
+ Revise and index its discussion in the stdtypes mapping/dict section.
+ Backport the code example from 3.4.
+
- Issue #21514: The documentation of the json module now refers to new JSON RFC
7159 instead of obsoleted RFC 4627.