docs: refine UI protocol sequence diagram in README.md

Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>

diff --git a/README.md b/README.md
index f34f12290b851089e84414a247458b1bd0177add..33044f1060b9143a784745f6fce602404809dffa 100644 (file)
--- a/README.md
+++ b/README.md
@@ -504,6 +504,7 @@ Protocol to control the simulator via a Websocket or HTTP server.
 sequenceDiagram
 Client->>UI Server: request
 UI Server->>Client: response
+Note over UI Server,Client: Transport protocol: HTTP, WebSocket
 ```
 
 ### HTTP Protocol