updated broken document link for out of band swaps (#76)

* updated broken document link for out of band swaps

* updated link to hx-swap-oob attribute page

As  @Telroshan suggested, the link points to a more comprehensive guide

src/ws/README.md

@@ -48,7 +48,7 @@ WebSockets extension support two configuration options:
 The example above establishes a WebSocket to the `/chatroom` end point. Content that is sent down from the websocket
 will
 be parsed as HTML and swapped in by the `id` property, using the same logic
-as [Out of Band Swaps](https://htmx.org/reference/hx-swap-oob.md).
+as [Out of Band Swaps](https://htmx.org/attributes/hx-swap-oob/).
 
 As such, if you want to change the swapping method (e.g., append content at the end of an element or delegate swapping
 to an extension),