Directive -> plugin (#3363)

Caught my eye, we name things directive still, esp when talking about
the prometheus *plugin*. Rename everything that needs to be plugin to
'plugin'. Also make sure Metrics is a H2 section (not H1).

Signed-off-by: Miek Gieben <miek@miek.nl>
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Miek Gieben 2019-10-08 10:20:48 +01:00 committed by GitHub
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@ -59,7 +59,7 @@ The output of the template must be a [RFC 1035](https://tools.ietf.org/html/rfc1
## Metrics
If monitoring is enabled (via the *prometheus* directive) then the following metrics are exported:
If monitoring is enabled (via the *prometheus* plugin) then the following metrics are exported:
* `coredns_template_matches_total{server, regex}` the total number of matched requests by regex.
* `coredns_template_template_failures_total{server, regex,section,template}` the number of times the Go templating failed. Regex, section and template label values can be used to map the error back to the config file.