[3.10] bpo-46677: Add examples of inheritance and attributes to `TypedDict` docs (GH-31349) (GH-31815)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
(cherry picked from commit 8a207e0321db75f3342692905e342f1d5e1add54)

Co-authored-by: Charlie Zhao <68189100+CharlieZhao95@users.noreply.github.com>
1 file changed