metric name for the grafana dashboard example is wrong

[jurampark-pala]

First of all, thanks for making this great library.

In the README, it says that this library export metrics like http_server* but I couldn't find grafana dashboard using those metrics. (Even in the example linked in dashboard, metric name is different).

Is it the matter of the outdated example?

[pragmaticivan]

This has been recently changed, will update the README today.