Docs: add named to the list of styles in the sqlite3.paramstyle attr docs (python#99078)

Author: ngnpope

Doc/library/sqlite3.rst

@@ -478,9 +478,10 @@ Module constants
 
    .. note::
 
-      The :mod:`!sqlite3` module supports both ``qmark`` and ``numeric`` DB-API
-      parameter styles, because that is what the underlying SQLite library
-      supports. However, the DB-API does not allow multiple values for
+      The :mod:`!sqlite3` module supports ``qmark``, ``numeric``,
+      and ``named`` DB-API parameter styles,
+      because that is what the underlying SQLite library supports.
+      However, the DB-API does not allow multiple values for
       the ``paramstyle`` attribute.
 
 .. data:: sqlite_version