It could be a mistake (#1196)

Author: zhangenming

src/guide/reactivity-fundamentals.md

@@ -74,7 +74,7 @@ When a ref is returned as a property on the render context (the object returned
 ```
 
 :::tip
-If you don't need to access the actual object instance, you can wrap it in a `reactive`:
+If you don't want to access the actual object instance, you can wrap it in a `reactive`:
 
 ```js
 nested: reactive({