docs(spanner): fix godoc for default value of health check interval
@@ -442,7 +442,7 @@ type SessionPoolConfig struct {
// HealthCheckInterval is how often the health checker pings a session.
//
- // Defaults to 5m.
+ // Defaults to 50m.
HealthCheckInterval time.Duration
// TrackSessionHandles determines whether the session pool will keep track
