docs(useLocalStorage): Clarify behavior when window is undefined

src/hooks/useLocalStorage/useLocalStorage.stories.mdx

@@ -47,8 +47,8 @@ or if an error is thrown by the `localStorage` API, the error is caught and logg
 back to the `defaultValue`.
 
 `useLocalStorage` is safe to use in a server-side rendering or unit testing environment where `window.localStorage` is
-not available. If `window` is undefined, the hook will simply always use the `defaultValue` and the setter function
-will only update the cached value in React state.
+not available. If `window` is undefined, the hook will simply act like a normal `useState` (only update the value cached
+in React state).
 
 ## Examples