Put title back to anchor from grafana.com work.s

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

README.md

@@ -5,7 +5,7 @@
 <a href="http://slack.raintank.io/"><img src="https://img.shields.io/badge/join%20slack-%23loki-brightgreen.svg" alt="Slack" /></a>
 </p>
 
-# Grafana Loki: like Prometheus, but for logs.
+# Loki: like Prometheus, but for logs.
 
 Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus.  It is designed to be very cost effective and easy to operate, as it does not index the contents of the logs, but rather a set of labels for each log stream.