[Docs: Rephrase] Explain correctly what a thunk is

[Sakai-san]

---

name: 📝 Documentation Fix
about: Fixing a problem in an existing docs page

Checklist

• Is there an existing issue for this PR?
  • issue 3972
• Have the files been linted and formatted?

What docs page needs to be fixed?

• Section: Recipes
• Page: Usage With TypeScript

What is the problem?

In the paragraph Usage with Redux Thunk, the concept of thunk is wrongly explained.

A thunk is a function that returns another function that takes parameters dispatch and getState.

This definition corresponds to a thunk action creator but not to a thunk.

What changes does this PR make to fix the problem?

Explain correctly what a thunk is.

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[msutkowski]

I don't believe the current copy needs any changes. Per MDN, Any unit of code that can be evaluated to a value is an expression - which would be inaccurate in this instance, as a thunk doesn't necessarily evaluate to anything.

[Sakai-san]

I don't believe the current copy needs any changes. Per MDN, Any unit of code that can be evaluated to a value is an expression - which would be inaccurate in this instance, as a thunk doesn't necessarily evaluate to anything.

@msutkowski Thanks for your remark. I ll close the PR in this case. Just before doing so, I just mention here how redux-thunk documentation explains what a thunk is :

[timdorr]

This seems fine to me. Thanks!