Improve `TypedDict` documentation #2863

Job	Run time
Run tests (3.10.4)	20s
Run tests (pypy3.9)	29s
Run tests (3.11.0)	22s
Run tests (3.13.0)	24s
Run tests (3.12.0)	21s
Run tests (3.11)	12s
Run tests (3.9)	19s
Run tests (pypy3.10)	27s
Run tests (3.13)	21s
Run tests (3.10)	19s
Run tests (3.9.12)	21s
Run tests (3.14)	16s
Run tests (pypy3.11)	34s
Run tests (3.12)	17s
Create an issue if daily tests failed	0s
	5m 2s

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