Add resources to useMemo hook (#6316)

* Update usememo@w3bNp7OkehI1gjx8NzlC8.md

* Update src/data/roadmaps/react/content/usememo@w3bNp7OkehI1gjx8NzlC8.md

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Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/react/content/usememo@w3bNp7OkehI1gjx8NzlC8.md

@@ -1 +1,8 @@
-# useMemo
+# useMemo
+
+useMemo is a React hook that memorizes the result of a function. It is used to optimize performance by caching the result of a function and returning the cached result when the inputs to the function have not changed.
+
+Learn more from the following resources:
+
+- [@official@useMemo Docs](https://react.dev/reference/react/useMemo)
+- [@article@useMemo and useCallback - Josh W. Comeau](https://www.joshwcomeau.com/react/usememo-and-usecallback/)