Simplify section 2 intro to single line

Agent-Logs-Url: https://github.com/ngrok/ngrok-docs/sessions/f5cfcec8-bcfa-46df-9dfb-65b97ea11c67

Co-authored-by: kaganjd <9204835+kaganjd@users.noreply.github.com>

Author: Copilot

using-ngrok-with/websockets.mdx

@@ -21,8 +21,6 @@ npm install ws
 
 ## 2. Create the server
 
-HTTP and WebSocket share the same port.
-
 Create a `server.js` file:
 
 ```js