Fix log in context docs for v3.
//
// For the best linking experience be sure to enable Distributed Tracing:
//
-// cfg := NewConfig("Example Application", "__YOUR_NEW_RELIC_LICENSE_KEY__")
-// cfg.DistributedTracer.Enabled = true
+// app, err := newrelic.NewApplication(
+// newrelic.ConfigAppName("Logs in Context"),
+// newrelic.ConfigLicense(os.Getenv("NEW_RELIC_LICENSE_KEY")),
+// newrelic.ConfigDistributedTracerEnabled(true),
+// )
//
// To enable log decoration, set your log's formatter to the
// `nrlogrusplugin.ContextFormatter`
