log/slog: make examples playable
Fixes #69246
Change-Id: I8e59132980404ee58ba2ca8718dd9f68404fdf8d
GitHub-Last-Rev:
f59d3fad2002cda69a24789f2fdd4e9753cede9c
GitHub-Pull-Request: golang/go#69249
Reviewed-on: https://go-review.googlesource.com/c/go/+/610535
Reviewed-by: Sean Liao <sean@liao.dev>
Auto-Submit: Sean Liao <sean@liao.dev>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>