docs(readme): correct latency comparison

The "~100ms vs 1-2s for SSE" line wrongly framed WS as faster than
SSE — both are push-based with comparable end-to-end latency. The
"1-2s" number applies to REST polling.

Reframe so the comparison is WS-push vs REST-polling, and surface
the real WS-vs-SSE tradeoff: bidirectional control vs simpler
unidirectional streaming.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Mlaz-code

README.md

@@ -66,7 +66,7 @@ stream.disconnect()
 
 ## WebSocket Streaming
 
-Lower latency (~100ms vs 1-2s for SSE):
+Real-time push (~100ms vs 1-2s for REST polling). SSE delivers comparable latency — pick WS for bidirectional control (subscribe/unsubscribe, filter updates) or SSE for simpler one-way streaming behind firewalls:
 
 ```typescript
 const stream = api.stream.oddsWs({