Fix broken link in readme file

README.md

@@ -66,7 +66,7 @@ Your feedback is always welcome.
 - Goutham Veeramachaneni's blog post "[Loki: Prometheus-inspired, open source logging for cloud natives](https://grafana.com/blog/2018/12/12/loki-prometheus-inspired-open-source-logging-for-cloud-natives/)" on details of the Loki architectire.
 - David Kaltschmidt's blog post "[Closer look at Grafana's user interface for Loki](https://grafana.com/blog/2019/01/02/closer-look-at-grafanas-user-interface-for-loki/)" on the ideas that went into the logging user interface.
 
-[devopsdays19-talk]: https://grafana.com/blog/2019/05/06/how-loki-correlates-metrics-and-logs----and-saves-you-money/
+[devopsdays19-talk]: https://grafana.com/blog/2019/05/06/how-loki-correlates-metrics-and-logs-and-saves-you-money/
 [architecture-blog]: https://grafana.com/blog/2019/04/15/how-we-designed-loki-to-work-easily-both-as-microservices-and-as-monoliths/
 [giant-swarm-blog]: https://blog.giantswarm.io/grafana-logging-using-loki
 [fosdem19-talk]: https://fosdem.org/2019/schedule/event/loki_prometheus_for_logs/