Update WebSocket reference to use Hume example

- Changed caption from 'WebSocket Reference page example' to 'Hume's WebSocket Reference Page'
- Replaced wss-reference.png with new Hume WebSocket screenshot

Addresses feedback from @kgowru in PR #1631

Co-Authored-By: Kapil Gowru <[email protected]>

Author: devin-ai-integration[bot]

fern/products/api-def/ferndef-pages/websockets.mdx

@@ -81,7 +81,7 @@ A `channel` is defined by the following fields:
 
 Fern renders a unique reference page for WebSockets. The **Handshake** section outlines the protocol for connecting with the server, while the **Send** and **Receive** sections outline the message schemas that can be sent between the client and server. 
 
-<Frame caption="WebSocket Reference page example">
+<Frame caption="Hume's WebSocket Reference Page">
 <img src="./wss-reference.png" alt="The WebSocket Reference" />
 </Frame>