Add Article links 01.use-reducer/01.problem.new-state (#220)

Co-authored-by: Kent C. Dodds <[email protected]>

Author: zacjones93

exercises/01.use-reducer/01.problem.new-state/README.mdx

@@ -9,4 +9,8 @@ be using it to learn how to use it).
 
 The emoji will guide you through this!
 
-📜 [`useReducer` docs](https://react.dev/reference/react/useReducer).
+📜 Here are some handy references:
+
+- [`useReducer` docs](https://react.dev/reference/react/useReducer)
+- [How to implement useState with useReducer](https://kentcdodds.com/blog/how-to-implement-usestate-with-usereducer)
+- [Should I useState or useReducer?](https://kentcdodds.com/blog/should-i-usestate-or-usereducer)