Apply suggestions from PR review

Signed-off-by: Max Neverov <neverov.max@gmail.com>

Co-authored-by: Bartlomiej Plotka <bwplotka@gmail.com>

CHANGELOG.md

@@ -34,7 +34,7 @@ We use *breaking* word for marking changes that are not backward compatible (rel
 - [#2892](https://github.com/thanos-io/thanos/pull/2892) Receive: Receiver fails when the initial upload fails.
 - [#2865](https://github.com/thanos-io/thanos/pull/2865) ui: Migrate Thanos Ruler UI to React
 - [#2964](https://github.com/thanos-io/thanos/pull/2964) Query: Add time range parameters to label APIs. Add `start` and `end` fields to Store API `LabelNamesRequest` and `LabelValuesRequest`.
-- [#2996](https://github.com/thanos-io/thanos/pull/2996) Sidecar: Add `reloader_config_errors_total` metric. Add new flags `--reloader.watch-interval`, and `--reloader.retry-interval`.
+- [#2996](https://github.com/thanos-io/thanos/pull/2996) Sidecar: Add `reloader_config_apply_errors_total` metric. Add new flags `--reloader.watch-interval`, and `--reloader.retry-interval`.
 
 ### Changed
 

pkg/reloader/reloader.go

@@ -151,8 +151,8 @@ func New(logger log.Logger, reg prometheus.Registerer, o *Options) *Reloader {
 		),
 		configErrors: promauto.With(reg).NewCounter(
 			prometheus.CounterOpts{
-				Name: "reloader_config_errors_total",
-				Help: "Total number of config reads that failed.",
+				Name: "reloader_config_apply_errors_total",
+				Help: "Total number of config applies that failed.",
 			},
 		),
 		watches: promauto.With(reg).NewGauge(