Update identifying users documentation (#14306)

DESCRIBE YOUR PR
Updates the "Identifying Users" section in the Session Replay
configuration to clarify how to associate user information with events
and link directly to the `setUser` API documentation.

Preview here:
https://sentry-docs-git-cursor-update-identifying-users-document-2ce2cb.sentry.dev/platforms/javascript/guides/nextjs/session-replay/configuration/#identifying-users

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---------

Co-authored-by: Cursor Agent <[email protected]>

Author: 2 people

docs/platforms/javascript/common/session-replay/configuration.mdx

@@ -107,7 +107,7 @@ replayIntegration({
 
 ## Identifying Users
 
-You can use the Sentry SDK to link a user to a session. Read more about it in our <PlatformLink to="/enriching-events/identify-user">Identify Users</PlatformLink> docs.
+You can use the Sentry SDK to link a user to a session, and add user information to events to help you identify users that are experiencing an issue. See [setUser](https://docs.sentry.io/platforms/javascript/guides/nextjs/apis/#setUser) to learn how to to set the user on Sentry events.
 
 ```javascript
 Sentry.setUser({ email: "[email protected]" });