docs: align error table message with actual error response

Author: Troublor

docs/realtime-api.md

@@ -280,7 +280,7 @@ Returns the same result as `eth_call` — the return data from the executed call
 
 | Code | Message | Description |
 |------|---------|-------------|
-| -32000 | Timeout | The nonce condition was not met within the timeout period |
+| -32000 | `Timeout: timeout waiting for nonce condition` | The nonce condition was not met within the timeout period |
 | -32000 | InternalError | An internal error occurred while processing the request |
 
 ## Example