Simplify the `useAppDispatch` definition

[patel-himanshu]

What docs page needs to be fixed?

• Section: Usage with TypeScript
• Page: https://redux.js.org/usage/usage-with-typescript#typing-the-usedispatch-hook

What is the problem?

The current definition of useAppDispatch can be shortened. Currently, it is:

export const useAppDispatch = () => useDispatch<AppDispatch>();

What should be changed to fix the problem?

It can be reduced to

export const useAppDispatch: () => AppDispatch = useDispatch;

[markerikson]

Hah, I think #4372 beat this one, and also has a PR :)

But, we have the same "TS Quick Start" page over in the React-Redux and Redux Toolkit repos. Can you update those?

[patel-himanshu]

Yeah, sure.