[Network] Update WebSockets (#18280)

Added note about session duration with EdgeStartTimestamp and EdgeEndTimestamp

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Co-authored-by: Pedro Sousa <[email protected]>
Co-authored-by: hyperlint-ai[bot] <154288675+hyperlint-ai[bot]@users.noreply.github.com>

Author: 3 people

src/content/docs/network/websockets.mdx

@@ -71,3 +71,5 @@ When Cloudflare releases new code to its global network, we may restart servers,
 
 Investigating issues with Websocket can be facilitated with client tools like [wscat](https://github.com/websockets/wscat).
 Being able to reproduce an issue on a single URL with a minimalistic tool helps narrowing down the issue.
+
+The `EdgeStartTimestamp` and `EdgeStopTimestamp` fields in [HTTP requests logs](/logs/reference/log-fields/zone/http_requests/) represent the duration of the WebSocket connection (they do not represent the initial HTTP connection).