fix: typo in useMemo example (#6330)

src/content/reference/react/useMemo.md

@@ -647,7 +647,7 @@ In this example, the `List` component is **artificially slowed down** so that yo
 
 Switching the tabs feels slow because it forces the slowed down `List` to re-render. That's expected because the `tab` has changed, and so you need to reflect the user's new choice on the screen.
 
-Next, try toggling the theme. **Thanks to `useMemo` together with [`memo`](/reference/react/memo), it’s fast despite the artificial slowdown!** The `List` skipped re-rendering because the `visibleItems` array has not changed since the last render. The `visibleItems` array has not changed because both `todos` and `tab` (which you pass as dependencies to `useMemo`) haven't changed since the last render.
+Next, try toggling the theme. **Thanks to `useMemo` together with [`memo`](/reference/react/memo), it’s fast despite the artificial slowdown!** The `List` skipped re-rendering because the `visibleTodos` array has not changed since the last render. The `visibleTodos` array has not changed because both `todos` and `tab` (which you pass as dependencies to `useMemo`) haven't changed since the last render.
 
 <Sandpack>