Go SDK "Custom Logger" docs recommend deprecated `logur` library

[ptdewey]

Temporal Affiliation

• I am a Temporal employee

Page URL

https://docs.temporal.io/develop/go/observability#custom-logger

Technical Issue

The custom-logger section recommends using the logur adapter package with a Logrus example.
This is now outdated, as the SDK now ships log.NewStructuredLogger() (added in v1.25.0, temporalio/sdk-go#1158) which wraps Go's standard slog.Logger and serves as the universal bridge to third-party loggers.

Suggested fix:

• Replace the logur/Logrus example with log.NewStructuredLogger(slog.Default()) as the primary recommendation
• Show how any logger that implements an slog.Handler (zap via zapslog, zerolog, etc.) can be bridged through slog
• Mention the direct log.Logger interface implementation as an alternative, with a pointer to the https://github.com/temporalio/samples-go/blob/main/zapadapter/zap_adapter.go

I'd be happy to make a PR with the above corrections if that would be helpful.