Update README.md

Author: james-laing

extra/grafana/README.md

@@ -139,7 +139,7 @@ Let's take a walkthrough an example of scraping the `/metrics/array` endpoint.
 
 5. Restart Prometheus to ensure changes take effect
 
-6. Navigate to your Prometheus instance via web browser http://prometheus:9090
+6. Navigate to your Prometheus instance via web browser http://prometheus-server.fqdn.com:9090
   -  Type `purefb_info` in the query box and hit return
   
 7. All going well, you will see your device listed:
@@ -278,4 +278,4 @@ Data Reduction Rate also has a threshold set for informational purposes to highl
 [1]: https://github.com/PureStorage-OpenConnect/pure-fb-openmetrics-exporter "pure-fb-openmetrics-exporter"
 [2]: https://prometheus.io/docs/introduction/overview/ "prometheus-docs"
 [3]: https://grafana.com/docs/grafana/latest/ "grafana-docs"
-[4]: https://grafana.com/docs/grafana/latest/administration/data-source-management/ "grafana-datasource"
+[4]: https://grafana.com/docs/grafana/latest/administration/data-source-management/ "grafana-datasource"