docs: add note that useId must be used with single root element

danielroe · danielroe · commit 401370b3a04b · 2024-03-17T19:17:25.000+01:00
diff --git a/docs/3.api/2.composables/use-id.md b/docs/3.api/2.composables/use-id.md
@@ -19,11 +19,15 @@ const id = useId()
 <template>
   <div>
     <label :for="id">Email</label>
-    <input :id="id" name="email" type="email"/>
+    <input :id="id" name="email" type="email" />
   </div>
 </template>
 ```
 
+::note
+`useId` must be used in a component with a single root element, as it uses this root element's attributes to pass the id from server to client.
+::
+
 ## Parameters
 
 `useId` does not take any parameters.
