Fix invalid link to useEffect docs (#5773)

Updated link from /api/useEffect to /reference/react/useEffect

Author: dean-leszman

src/content/reference/react/Component.md

@@ -1711,7 +1711,7 @@ function ChatRoom({ roomId }) {
 }
 ```
 
-This [`useEffect`](/api/useEffect) call is equivalent to the logic in the lifecycle methods above. If your lifecycle methods do multiple unrelated things, [split them into multiple independent Effects.](/learn/removing-effect-dependencies#is-your-effect-doing-several-unrelated-things) Here is a complete example you can play with:
+This [`useEffect`](/reference/react/useEffect) call is equivalent to the logic in the lifecycle methods above. If your lifecycle methods do multiple unrelated things, [split them into multiple independent Effects.](/learn/removing-effect-dependencies#is-your-effect-doing-several-unrelated-things) Here is a complete example you can play with:
 
 <Sandpack>