message: fix confusing comment
diff: @@ -66,7 +66,7 @@ export interface UsageMetricsWriter {
  writeBytesTransferred(accessKeyId: AccessKeyId, numBytes: number, countries: string[]);
  }
  -// Writes usage metrics to Prometheus.
  +// Reads data usage metrics from Prometheus.
  export class PrometheusUsageMetrics implements UsageMetrics {
  private resetTimeMs: number = Date.now();
  